Collective Holdings of the Abbey of St Mergen

For more than seven centuries the Abbey of St. Mergen was one of the great business enterprises of the Moselle, and the families who took its name did its work. This is the story of its money: what it owned, how it earned, what it kept in its treasury, what it was worth, and how it was all sold off in a few short years.

Key takeaways

• St. Mergen was a Grundherrschaft, a manorial lordship. Its wealth was mostly land and rights, not coins in a chest.
• Its biggest earner was wine, led by the Scharzhofberg, backed by grain rents, mill monopolies, timber, river trade and town rents from the Mergener Hof in Trier.
• It also functioned as a bank (lending against land) and a pilgrimage and hospitality business built on its martyrs' relics.
• The Mergener Archive estimates its capital value in 1750 at 1.2–1.5 million Reichsthaler, more than 10,000 years of a master vintner's wages.
• After the French decree of 9 June 1802, its property was auctioned off, by the Archive's estimate for only 15–25% of its pre-war value.
• Rebuilt as a modern portfolio, the same holdings would be worth roughly €90–150 million.
• The buyers were mostly townspeople with cash. The tenant families who worked the land, the Mergeners among them, gained little, and many later emigrated.

Part 1 · The balance sheetWhat the Abbey Owned, circa 1750

By the middle of the eighteenth century, a few decades before the French Revolution, St. Mergen stood at the economic peak of its thousand-year history. It was a major Grundherrschaft (a manorial lordship) within the Electorate and Archbishopric of Trier, running a diversified enterprise across the Moselle and Saar valleys.

What follows is the Mergener Archive's reconstruction of the major holdings around 1750, drawn from regional feudal registers and municipal property rolls.

1. Town property and safe refuges

• The Mergener Hof (inside Trier): the abbey's fortified town court (Stadthof) inside the city walls. It was the administrative office, the wine vault, a tax-exempt granary and, above all, a refuge in wartime. Because the abbey itself stood outside the walls, the Mergener Hof was where monks, records and stores could shelter when armies came, as they did in 1552, the Thirty Years' War and 1673–75.
• The Schwarzer Hof ("Black Court") and town tenements: secondary courtyards and houses in Trier and nearby river towns, rented to master craftsmen, merchant partners and the abbey's own administrators.
• The abbey complex: the great site on the northern Moselle bank, with its basilica, cloister, infirmary, guest quarters, chapter house and walled gardens.

2. Vineyards and farmland

• Steep-slope vineyards: slate terraces along the Moselle, including holdings at Trier-Zurlauben, Mertert (on the Luxembourg side of the Moselle) and other river villages, producing Riesling and the older Elbling grape, plus the crown jewel on the Saar, the Scharzhofberg at Wiltingen.
• Arable land held in Erbpacht: hundreds of hectares of river-plain soil for wheat, rye, barley, oats and legumes, farmed by tenant families under hereditary leases. These tenants, die Mergener, "the people of St. Mergen", are the families this blog is about.
• Livestock and orchards: pasture for cattle, sheep and pigs; orchards for cider and dried fruit; and bees for honey and the wax that lit the abbey's altars.

3. Forests and natural resources

• Timber and fuel: upland oak and beech forest supplied building timber, barrel staves for the coopers, vine stakes for the vineyards and firewood.
• Quarry rights: local red sandstone and slate for repairing buildings, courtyards and the dry-stone walls that hold up vineyard terraces.

4. Rivers, mills and water rights

• Grain mills and oil presses on streams feeding the Moselle, protected by milling monopolies (explained in Part 2).
• Docks and moorings on the Zurlauben waterfront next to the abbey, where wine casks, timber rafts and grain were loaded straight onto Moselle barges.
• Toll exemptions: charters from emperors and archbishops let abbey cargo pass key toll points on the Moselle and Rhine without paying.

5. Hospitality and pilgrimage

• A martyrs' shrine: as the traditional burial place of early Christian martyrs, the abbey lay on regional pilgrimage routes and ran a guest house (hospitium) offering beds, food and care.
• Tavern rights (Schenke): the right to sell its own wine to travellers, pilgrims and townspeople without paying the city's drink tax.

Every one of these assets needed people: vintners, coopers, millers, bargemen, stonemasons, carters, farm stewards. The ancestors who carried or adopted the name Mergener were the workforce that ran, maintained and protected this enterprise for generations.

Part 2 · The income statementMaking Bank at the Abbey: Revenue Streams

Owning land is one thing; turning it into steady income is another. St. Mergen did this with a skill that would impress a modern corporate strategist, converting spiritual authority, imperial privilege and a prime location on the Moselle trade route into cash, goods and more land.

1. Wine: the cash crop

Viticulture was the leading source of wealth for the Benedictine houses of the Moselle and Saar, and St. Mergen ran it with corporate precision.

• The Scharzhofberg: after the 1030 gift from the House of Luxembourg, the monks developed the steep slate slopes at Wiltingen into a vineyard whose mineral soils and microclimate produced Rieslings that fetched top prices across Europe. By 1239 the abbey had its own press house there, by 1314 it was buying more plots on the hill, and in 1719 it built a manor house on the estate.
• Diversified estates: beyond wine, the abbey ran farm estates (Höfe) across the district of Konz and the upper Moselle, forests for vine stakes and barrel staves, orchards and pasture. That made it self-sufficient and left a surplus to sell.

2. Monopolies: getting paid for the necessities

Some of the most reliable income came from Bannrechte, seigneurial monopoly rights granted or confirmed by the Archbishop-Electors.

• Mill compulsion (Mühlenzwang): the abbey built and controlled water mills on the Moselle, the Saar and their tributaries. Villagers in its lordship were legally required to grind their grain at those mills and hand over a share of the flour as a toll (Multer). Everyone needed bread, so this income came in whatever the harvest.
• Rents in kind: Erbpacht tenants paid a fixed rent or a share of their crop: bushels of grain, measures of wine, poultry, eggs. Payment in goods protected the abbey against inflation, because a bushel of rye kept its value when coins lost theirs.

3. Logistics: the Mergener Hof as an inland port

Inside Trier's walls, the Mergener Hof worked as a secure warehouse and depot. Bulk wine, grain and timber were stored there before shipping down the Moselle to the Rhine and the markets of Cologne and the Low Countries. With toll exemptions on the river, the abbey's cargoes paid less on every journey than a lay merchant's. That is a permanent cost advantage.

4. Records as a business asset: the scriptorium and the ledgers

Knowledge management kept the abbey solvent and in court.

• Estate ledgers: the cellarer (Kellner) and stewards kept multi-generational records of weather, harvest yields, soil conditions, barrel stocks and leases, effectively a centuries-long agricultural research database.
• Cartularies and title deeds: monks copied their charters, papal bulls and imperial privileges into bound books (cartularia). These were the abbey's legal weapons, produced in church and secular courts to defend tax exemptions, boundaries and rights against ambitious nobles. (Abbot Johannes II's vernacular land register of 1492, told in The Land and the Name, was part of this tradition.)
• Working with guilds: the abbey gave steady contracts to Trier's coopers, stonemasons, blacksmiths and river shippers. As a large, reliable customer it shaped the local labour market and could insist on quality in its barrels and buildings.

5. Banking: lending against land

Big monasteries often acted as banks. With reserves of silver and a steady flow of wine money, St. Mergen lent to local nobles, towns and even the Electoral government. Loans were usually secured by a pledge of land (Satzung). When a borrower defaulted, the land passed to the abbey, which is one more way its holdings grew across the Rhineland countryside.

6. Relics and pilgrims

Trier was one of the great pilgrimage cities north of the Alps, and St. Mergen, built over a late-Roman martyrs' cemetery, had relics to show (see Part 3). Pilgrimage brought several kinds of income:

• Offerings (oblationes) left by pilgrims at shrines and crypts, heaviest on the great feast days when relics were displayed to the public.
• Pilgrim badges (Pilgerzeichen): small cast lead or pewter badges showing the Virgin or the martyrs, worn on hat or cloak as proof of the journey.
• Ampullae: small vials of blessed water, oil from the lamps burning before the relics, or earth from holy ground.
• Votive goods: candles and wax or metal tokens shaped like the body part a pilgrim prayed to have healed (hands, feet, hearts, eyes).

7. Hospitality and spiritual services

• Tiered lodging: guest houses served every class, with private rooms for nobles and wealthy travellers and dormitory beds for ordinary pilgrims.
• Monastery taverns (Klosterschenken): the abbey sold its own wine, and sometimes its own beer, to travellers and locals, free of municipal drink tax.
• Stabling and gate services: fodder, stabling and secure storage for horses and wagons.
• Burials: noble and merchant families paid heavily for graves in the church, crypt or cloister, believing that lying near the martyrs helped the soul.
• Endowed Masses (Stiftungen): patrons gave land, vineyards or money in return for perpetual anniversary Masses. Many abbey properties arrived this way, including, by one reading, the 1030 Scharzhof gift itself.
• Blessings, healing rites and indulgences: donations accompanied special prayers and blessings for the sick, and pilgrims seeking absolution gave alms as part of penance or to gain episcopal indulgences.

8. The political partnership with the Archbishop-Elector

All of this rested on St. Mergen's relationship with the Archbishop-Elector of Trier, who was both its spiritual superior and the prince of the territory. He guaranteed its tax immunities and protection. In return the abbey was a loyal institution, a source of prayer and prestige, and a lender of last resort.

Part 3 · The treasuryTreasures and Relics of St. Mergen

Every great abbey kept a treasury: precious objects that were at once sacred, artistic and financial reserves. In a crisis, gold and silver could be pawned or melted. In good times they drew pilgrims and impressed visiting princes.

1. The Gospels of St. Maria ad Martyres

The most prized object was the Evangeliar von St. Maria ad Martyres, an illuminated Gospel book dated to about 800, the high point of the Carolingian Renaissance. It is written in gold and silver on vellum, with decorated initials and full-page portraits of the Four Evangelists in the classical Carolingian style.

• Origin by tradition: abbey tradition and eighteenth-century pilgrim accounts attribute it to Charlemagne and the scribes of his court school at Aachen, as an imperial gift to strengthen worship and imperial patronage on the Trier trade routes.
• A thousand years in the treasury: it was kept for high feasts and shown to visiting emperors, royals and important pilgrims.
• Survival: it came through the dissolution of 1802 intact.
• Today: held by the Wissenschaftliche Bibliothek der Stadt Trier (Stadtbibliothek Trier), recorded in the Mergener Archive as Hs 23/122 a/b 2°.

2. The relics

• The Roman martyrs: the foundation of the abbey's identity. Built over a late-Roman burial ground, its high altar held bone reliquaries of early Christians, associated in Trier tradition with the martyrs of the legendary Theban Legion. They gave the monastery its name: Sancta Maria ad Martyres, "St. Mary at the Martyrs".
• A relic of the True Cross: kept in silver-gilt monstrances, displayed at the great feasts and carried in annual processions through the Moselle valley.
• Shrines of early bishops: caskets holding bones, vestments and rings of early saints and bishops of Trier, such as St. Severus, linking the abbey to the first centuries of the Church in Trier.
• The processional "Queen of Martyrs": a carved and gilded wooden statue of the Virgin, the visual focus for pilgrims in the abbey's precinct and gardens.

3. What happened in 1802

When the French suppressed the monastery, the treasury was broken up. Gold and silver cases and reliquaries were seized and melted down as bullion, a direct conversion of sacred art into cash for the state. Monks and local people saved many of the relics themselves. According to the Mergener Archive, some bones and statues are now in Trier parish churches, including St. Gangolf and Trier Cathedral.

Part 4 · The valuationWhat Was St. Mergen Worth in 1750?

Putting a single number on a medieval institution is hard, because its wealth was not held in cash. It lay in perpetual income: rents, tithes, wine, grain, mill tolls, timber and town rents, paid year after year. Historians value such an estate the way an investor values a business: by its income.

The currencies

• Reichsthaler: the large silver unit of account used across the Holy Roman Empire for big sums and estate values.
• Petermännchen: the everyday small silver coin of the Electorate of Trier, named after the figure of St. Peter, Trier's patron, that it bore.

The estimate

Based on Rhineland secularization registers, the Mergener Archive reconstructs St. Mergen's capital value around 1750 at about 1.2–1.5 million Reichsthaler.

To make that meaningful: a skilled craftsman or master vintner earned roughly 80–120 Reichsthaler a year. So the abbey's holdings equalled more than 10,000 years of skilled wages (1,200,000 ÷ 120 = 10,000; at 80 a year it would be 15,000+).

Part 5 · The liquidationThe 1802 Secularization: Asset Stripping in the Rhineland

The end came in two stages. French revolutionary armies occupied the left bank of the Rhine in 1794 and sequestered church property: it stayed in place but under state control. (Scharzhof was sold early, in 1797.) Then, on 9 June 1802 (20 Prairial, year X), a decree under First Consul Napoleon Bonaparte suppressed the religious houses in the four Rhenish departments. Trier lay in the Département de la Sarre. St. Mergen ceased to exist, and its property became biens nationaux, national property to be sold. Most auctions took place between 1803 and 1813, and the proceeds helped fund the French state and its wars.

1. How the sale worked

• Broken into lots: the integrated estate was cut into separate auction lots: vineyards, mills, fields and town courtyards such as the Mergener Hof and Schwarzer Hof.
• A flooded market: with every abbey in the region selling at once, in wartime, prices fell. The Mergener Archive estimates that property fetched only 15–25% of its true pre-war value.
• Buildings as quarries: the abbey's own church and cloister were sold as building material and stone. They were largely demolished between 1804/05 and 1807, leaving only the east wing, today the Exzellenzhaus.

2. Breaking an integrated system

The second of the Archive's revenue posts argues that the real loss was not just property but a system:

• The supply chain: the abbey had been a vertically integrated business, with its own forests for barrel staves, its own coopers, masons, smiths and bargemen on long, multi-generational contracts. Auctioned in pieces, that coordination vanished overnight.
• The knowledge base: centuries of ledgers on soils, microclimates and yields were scattered into private hands or thrown away, breaking the continuity of the valley's viticultural knowledge.
• The safety net: abbeys kept emergency grain stores, gave interest-free help in bad years, and provided nursing, hospice care and charity. After privatisation these duties had no one to carry them.
• Stripping for resale: many buyers were speculators who stripped buildings for quick profit rather than running them.

Part 6 · The modern valueWhat Would the Holdings Be Worth Today?

Suppose we could gather St. Mergen's 1750 portfolio back together, with Trier real estate, Moselle vineyards, farmland, forest and water rights, and put a present-day price on it. The Mergener Archive's reconstruction:

In the Archive's words, when the French dissolved St. Mergen they did not just close a church: they liquidated what would today be a roughly $150 million enterprise, the economic engine that had supported generations of Mergener ancestors.

Part 7 · The human ledgerWho Gained, Who Lost: Secularization and the Mergener Families

It is tempting to picture secularization as land going back to the people who farmed it. It mostly did not. It was a transfer of wealth from one elite to another: from the Church to a rising class of townsmen with capital.

1. The cash barrier

Estates were auctioned in large, undivided lots and had to be paid for in hard currency on strict schedules. Vineyard workers and tenant farmers had generations of know-how but almost no savings. They were shut out of the bidding.

2. The power brokers

The people who wrote the deeds, managed the paperwork and knew the auction rules (notaries, lawyers and municipal officials) were at the centre of the market, alongside merchants and speculators who bought the best plots. One Trier lawyer working in this world was Heinrich Marx, father of Karl Marx (born in Trier in 1818). It is one of history's ironies that the city where church land passed to the bourgeoisie produced the century's most famous critic of property. In 1843 the young Karl Marx wrote newspaper articles defending the impoverished Moselle wine-growers.

3. From protection to exposure

Under the abbey, tenants lived inside a paternalistic system. Customary hereditary leases made eviction rare, and in a bad harvest the monastery might lower dues, open its grain stores or give charity. New private owners looked for the best return. Labour became a cost, and a failed harvest could mean eviction with no charity to fall back on.

4. Leave or go under: the migration brokers

By the 1830s and 1840s, the pressures piled up. Inheritance had split farms into plots too small to live on, the Prussian government (in charge of the Rhineland since 1815) pressed harder, and wine prices collapsed in bad years. Emigration agents (Auswanderungsagenten) worked the villages, selling passage to North and South America. For many Moselle families, including Mergeners of Wasserliesch, the way out of a broken economy was a ship across the Atlantic.

ConclusionThe Bottom Line

1. Assets: vineyards, farmland, mills, forests, docks and town courts. By 1750 St. Mergen was one of the great landholders of the Electorate of Trier.
2. Income: wine, rents in kind, mill tolls, river trade, lending, pilgrims and hospitality, protected by tax and toll exemptions.
3. Treasury: a Carolingian Gospel book, martyrs' relics and precious reliquaries that drew pilgrims for centuries.
4. Value: an estimated 1.2–1.5 million Reichsthaler, more than 10,000 years of a master vintner's pay.
5. Liquidation: sequestered in 1794, dissolved on 9 June 1802, auctioned in lots, by estimate for a fraction of its worth; its silver melted, its buildings sold as stone.
6. Today: perhaps €90–150 million in modern terms, not counting the Scharzhofberg.
7. The human cost: the Mergener tenants, who ran the enterprise, ended up with almost none of it, and many of their descendants emigrated.

Accounts usually end with a profit or a loss. St. Mergen's closing entry is a family name: carried across an ocean by people whose ancestors had kept the abbey's vineyards, mills and barns running for eight hundred years.

ReferenceGlossary

Grundherrschaft

Manorial lordship: control over land and over the dues and services of the people who farmed it.

Erbpacht

Hereditary lease. A tenant family held land for generations in return for fixed rent or a share of the crop.

Bannrechte

Seigneurial monopoly rights, such as owning the only permitted mill, wine press or oven.

Mühlenzwang

"Mill compulsion": tenants had to grind at the lord's mill.

Multer

The miller's toll, paid as a share of the flour.

Stadthof

A rural lord's or monastery's town court: office, warehouse and refuge inside city walls.

Kellner (cellarer)

The monk in charge of the abbey's stores, cellars and estate accounts.

Cartulary (cartularium)

A bound book of copies of an institution's charters and title deeds.

Satzung

A pledge or mortgage of land as security for a loan.

Rentenkauf

"Rent purchase": buying a yearly income charged on land, the lawful church alternative to an interest-bearing loan.

Oblationes

Offerings given by the faithful at altars and shrines.

Pilgerzeichen

Pilgrim badges, usually cast in lead or pewter.

Stiftung

An endowment given in return for perpetual prayers or Masses.

Simony

The forbidden buying or selling of sacraments or spiritual goods.

Reichsthaler

The large silver unit of account of the Holy Roman Empire.

Petermännchen

Small silver coin of the Electorate of Trier, bearing St. Peter.

Sequestration

Placing property under state control before confiscation or sale.

Biens nationaux

Church and émigré property confiscated and sold by the French state.

Capitalisation

Estimating an asset's value by dividing its yearly income by a normal rate of return.

Auswanderungsagent

An emigration agent who sold passage and arranged travel for emigrants.

ReferenceFrequently Asked Questions

ReferenceSources and Further Reading

The five Mergener Archive posts combined here

1. (notes) Revenue Streams, and Wealth Creation at St. Mergen – Part 1
2. (notes) Revenue Streams, and Wealth Creation at St. Mergen – Part 2
3. (notes) The Treasures & Relics of St. Mergen
4. Financial Valuation Accounting circa: 1750, 1802, and a Modern Valuation
5. Financial Accounting of Abbey Holdings (Circa 1750)

Companion article

• The Land and the Name: St. Mergen, Scharzhof, and the Eight Turning Points That Made the Mergener Family

Outside sources

• Lars Carlberg, How Scharzhof Came into Private Hands in the Early 19th Century (1797 auction prices; 1851 sale to Trier Cathedral)
• KuLaDig, Benediktinerabtei Sankt Marien zu den Märtyrern (dissolution and demolition)
• Klosterlexikon Rheinland-Pfalz, Trier – St. Maria ad martyres
• Wolfgang Schieder (ed.), Säkularisation und Mediatisierung in den vier rheinischen Departements 1803–1813, the published record of the Rhineland secularization sales

Archives for primary records

• Landeshauptarchiv Koblenz: St. Maria ad Martyres estate accounts, leases and the French sequestration and sale files
• Stadtbibliothek Trier: the Evangeliar and other St. Mergen manuscripts
• Bistumsarchiv Trier and the Trier Cathedral treasury: whereabouts of rescued relics

Open research questions

• Find any surviving yearly accounts (Rechnungen) of the abbey from the 1700s to test the 1.2–1.5 million Reichsthaler estimate.
• Look up the St. Mergen lots in Schieder's sale records: buyers, dates, estimated values and prices paid.
• Confirm the Evangeliar's shelfmark and the library's own dating and attribution.
• Trace which relics went to St. Gangolf and Trier Cathedral, and when.
• Identify who bought the Mergener Hof and Schwarzer Hof.

© Mergener Archive. All rights reserved. This article consolidates five earlier posts and tests their figures against published archival research where noted. Monetary reconstructions are illustrative estimates, not appraisals.