The Roman Placentia on the Po, a bishop's city and a rich commune at the junction of the river, the Via Emilia and the Via Francigena.
Its basilica of Sant'Antonino saw the first talks of the Peace of Constance (1183), and the Lombard League ratified that peace in the city on 21 January 1185.
Who holds it
- Name
- Not pinned for 1 January 1200
- Title
- Podestà and consuls of the commune
- Since
- not pinned
- Confidence
- low
Lord in 1200
The commune (podestà and consuls); the bishop, Grimerio della Porta (since 11 July 1199), holds the cathedral, his palace and the see's lands but no longer rules the city.
Charter
Peace of Constance (1183): regalian rights confirmed, Castell'Arquato restored, rights over the Po recognised; a mint since King Conrad III's grant of 1140 (not checked in a source read for this record).
Council
Consuls and, since 1188, a podestà (the first was the Milanese Iacopo Mainerio), with the city councils; the merchants and craftsmen whose rise forced the change sit beside the old consular families. The names of the councils in 1200 were not found.
Communities
Pilgrims' hospices on the Via Francigena; the monastery of Santa Brigida, the abbey of San Sisto (which holds Guastalla). Jewish or foreign merchant communities in 1200: not pinned.
Militia
The commune's host of knights and foot by city districts; defeated on the Taro on 19 June 1199. No figures in the sources read.
Walls and castle
The city walls of the 12th century (circuit not pinned); the commune's later Palazzo Gotico is of 1281, not yet built.
Trade and crafts
Po shipping and tolls, the Via Francigena trade and pilgrims, money-lending and long-distance trade through Genoa and over the Alps; cloth.
Places of note
- Basilica of Sant'Antonino: First talks of the Peace of Constance
Where the sources disagree
Evidence: The city's institutions are attested in outline; the officers of 1200 were not found.
Primary sources for Piacenza
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.
- Chronicle of Sicard, bishop of Cremona, Sicard of Cremona (about 1210 to 1213). A universal chronicle whose last part is a well-placed eyewitness account by a Lombard bishop who served emperors and popes. Read online
- The Lombard city annals of Piacenza, Milan, Cremona, Parma, Mantua and Verona (kept in the 12th and 13th centuries). The communes' own year lists. Read online
Sources and studies
- Storia di Piacenza (it.wikipedia)
- Piacenza (Enciclopedia Italiana, Treccani)
- Diocesi di Piacenza-Bobbio (it.wikipedia)
Last revised 4 November 2026. Published 4 November 2026. Suggest a correction on the OMNIA Discord.