Papal state · The Papal State: the pope's own lands · as at first light, 1 January 1200

Patrimony in Tuscia

The Patrimony is the old papal land of southern Tuscia, from the fortress of Radicofani on the Via Francigena down to the edge of the Roman district: lake country, volcanic hill towns and the Maremma coast.

It is a patchwork rather than a block. The pope holds castles of his own (Radicofani, Montefiascone, Bolsena), towns that accept his lordship but rule themselves (Tuscania, Corneto, Sutri, Nepi, Orte, Civita Castellana), the castles of the prefect di Vico, who is now his vassal, and two great communes that go their own way: Viterbo, which is at war with Rome on 1 January 1200, and Orvieto, whose papal podesta was murdered in May 1199.

Who holds it

Name
Innocent III
Title
Pope, lord of the province; a papal rector governs it [rector on 1 January 1200 not pinned]
Since
1198 (recovery from Henry VI's officers and organisation as a province)
Confidence
high

Innocent III gave the Patrimony its form as a province under a rector (it.wikipedia calls it a province 'established by Innocent III', also known as Tuscia suburbicaria). Its frame, as Honorius III put it in 1227, ran 'from Radicofani to Rome' (Ferreri). The rector in office on the morning of 1 January 1200 is not pinned, and neither is his seat; Montefiascone, used here as the seat, became the rectors' fortress in the 13th century.

What it holds

  • Radicofani: papal fortress above the Via Francigena, the northern gate of the province
  • Montefiascone: papal castle above Lake Bolsena
  • Bolsena and the lake shore with its fisheries
  • Acquapendente: town on the Via Francigena claimed by the pope [who actually held it in 1198-1199 is not pinned; see notes_discrepancy]
  • Viterbo: largest commune of the province, under papal lordship but self-governing; at war with Rome on 1 January 1200
  • Tuscania (Toscanella) and Corneto (Tarquinia): communes under papal lordship on the Maremma edge
  • Civitavecchia: port held by the prefect Pietro di Vico as a fief (Luchaire)
  • Vico, Vetralla, Caprarola and Carbognano: castles of the di Vico prefects, papal vassals since 1198 (Luchaire)
  • Sutri, Nepi, Civita Castellana and Orte: towns of the southern Patrimony on the roads to Rome
  • Bagnoregio: cathedral town under papal lordship [thin]
  • Orvieto: commune under papal lordship since its accord with Adrian IV in 1157 (Ferreri), self-governing, its relations with the pope strained since 1198

How it was acquired

The Patrimony grew from the papal estates of late antiquity and the Lombard and Carolingian grants; the gift of Sutri by the Lombard king Liutprand (728) is the classic first donation. The popes bought and built castles along the Via Francigena in the 12th century, and Orvieto came under papal lordship by its accord with Adrian IV in 1157 (Ferreri). Henry VI's officers held much of the province in the 1190s; Innocent III took it back in 1198 and made it a province under a rector.

How things stand that morning

Papal castles held; most communes acknowledge papal lordship and govern themselves. Viterbo is at war with Rome, the pope's other subject, and Orvieto is a sore. On the map: the province held, Viterbo and Orvieto contested.

Wealth

Tolls on the Via Francigena, the pilgrim and merchant road from France to Rome (Radicofani, Acquapendente, Bolsena, Montefiascone, Viterbo, Sutri); the eels and fish of Lake Bolsena; the ports of Civitavecchia and Corneto and their coastal trade with Pisa and Genoa; Maremma grain and pasture.

Threats

  • Viterbo's war with Rome over Vitorchiano: two of the pope's own subjects in arms against each other
  • Heresy: Innocent's decretal Vergentis in senium (25 March 1199) was addressed to Viterbo, where Cathars had a following, and Orvieto's heretics murdered the papal podesta in May 1199
  • Orvieto's grudges: the interdict of 1198 and the dispute over Acquapendente
  • The prefect di Vico, Henry VI's man until 1197, could turn again if an emperor comes south

Advocates and rivals

Rome, which claims a say over the southern Patrimony and is at war with Viterbo; the di Vico prefects with their castles and Civitavecchia; the Aldobrandeschi counts, masters of the Maremma to the west (Ferreri notes an Aldobrandeschi count as podesta or rector of Viterbo about 1170); Orvieto, pushing its contado towards the lake; Siena and the Tuscan League on the northern frontier beyond Radicofani.

What the year holds

What happened next, if nothing in play changes it. Each event carries what it depends on and what would stop it.

  1. 6 January 1200 (Gregorovius, Luchaire) or early 1201 (Treccani)Viterbo is defeated by the Romans and in the peace brokered by Innocent submits to the senate and people of Rome, gives up Vitorchiano and pulls down part of its walls (see Rome).Depends on: Viterbo choosing battle; Rome's militia funded by Riccardo dei Conti. Stopped by: A papal truce before battle; outside help for Viterbo.

Places of note

  • Rocca di Radicofani: Papal fortress over the Via Francigena, the northern gate of the Patrimony
  • Rocca di Montefiascone: Papal castle above Lake Bolsena
  • Civitavecchia: Port held by the prefect Pietro di Vico as a papal fief

Where the sources disagree

  • Orvieto and its interdict: the campaign notes (Parts 2, 5 and 6E) say Orvieto was laid under interdict for heresy in 1198 and is 'under interdict' on 1 January. The standard account, the Passio of Pietro Parenzo by Master John of Orvieto, ties the interdict to Orvieto's dispute with the pope over Acquapendente, with heresy spreading while the churches were shut; and Parenzo was sent as podesta at the city's request early in 1199, which suggests the interdict had been lifted by then. We could not verify this here (the Treccani DBI entry on Pietro Parenzo could not be read: rate limit), so treat it as a point to check, not a correction.
  • The campaign notes list Orvieto, Viterbo and Toscanella as the Patrimony. The province is wider: Radicofani, Montefiascone, Bolsena, Acquapendente, Corneto, Civitavecchia, Sutri, Nepi, Civita Castellana and Orte belong to it, with the di Vico castles inside it.

Evidence: Fair for the frame of the province and its main towns; thin for who held Acquapendente and the far west, and for the rector's name in 1200.

On the map: Drawn as one outline from Radicofani to the Roman district, with Viterbo and Orvieto shown as contested. In reality the province was a mosaic of papal castles, baronial fiefs and self-governing communes, and its southern border with the Roman district was never fixed. The far west (Castro, Canino, Montalto) is left out as Aldobrandeschi country; Orvieto's large contado is shown only by the modern commune.

Primary sources for Papal State

Chronicles, registers, sagas and inscriptions written in or near 1200 that cover this entry. Each has its own page with editions, translations and where to read it.

12 more in the sources library for Southern Italy and the Islands.

Sources and studies

  1. Ricerche sul Patrimonio di San Pietro in Tuscia, secoli VI-XIII (historiaetius.eu, PDF)
  2. Patrimonio di San Pietro (it.wikipedia)
  3. A. Luchaire, Innocent III: Rome et l'Italie (PDF, mediterranee-antique.fr)
  4. F. Gregorovius, Storia della citta di Roma nel medio evo, vol. 5 (Project Gutenberg)
  5. Innocenzo III (Treccani, Enciclopedia dei Papi)
  6. Vitorchiano (it.wikipedia)

Last revised 4 November 2026. Published 4 November 2026. Suggest a correction on the OMNIA Discord.