republic · Italy
Republic of Siena
Origins
Siena's citizens took power from their bishop in the early 12th century, and consuls are recorded by 1125. Lying on the Via Francigena pilgrim road, the commune prospered from banking and trade and expanded its territory across southern Tuscany.
Rule and society
Siena was generally Ghibelline and crushed Florence at Montaperti in 1260 under leaders such as Provenzan Salvani. From 1287 to 1355 the merchant government of the Nine built the Palazzo Pubblico, where Ambrogio Lorenzetti painted his Allegory of Good and Bad Government in 1338–1339. Duccio and Simone Martini made the city a centre of painting. The Black Death of 1348 halted its growth; the Monte dei Paschi bank dates from 1472.
Decline and legacy
After a period of rule by Pandolfo Petrucci, Siena rebelled against a Spanish garrison in 1552. Imperial and Florentine troops besieged it until it surrendered in April 1555. Exiles continued as the Republic of Siena at Montalcino, and Siena was granted to the Duchy of Florence in 1557.
Lineage
On the connections map
Open the full map →Connections (2)
- Republic of Siena was part of Holy Roman Empire1125 CE – 1555 CE
- Republic of Siena was conquered by Spanish Empire1555 CE
Cite this page
- APA
- The Epoch Institute. (2026). Republic of Siena. In The Epoch Institute States Register. https://the-epoch-institute.org/state/republic-of-siena
- MLA
- “Republic of Siena.” The Epoch Institute States Register, The Epoch Institute, 2026, https://the-epoch-institute.org/state/republic-of-siena. Accessed .
- Chicago
- The Epoch Institute. “Republic of Siena.” The Epoch Institute States Register. 2026. https://the-epoch-institute.org/state/republic-of-siena.
- Harvard
- The Epoch Institute (2026) ‘Republic of Siena’, The Epoch Institute States Register. Available at: https://the-epoch-institute.org/state/republic-of-siena (Accessed: ).
Last reviewed October 2026Random state ↻