|Comune di Sonnino|
|Frazioni||Capocroce, Cerreto, Frasso, La Sassa, Sonnino Scalo|
|• Mayor||Luciano De Angelis|
|• Total||63 km2 (24 sq mi)|
|Elevation||430 m (1,410 ft)|
(31 March 2017)
|• Density||120/km2 (310/sq mi)|
|Time zone||UTC+1 (CET)|
|• Summer (DST)||UTC+2 (CEST)|
|Patron saint||St. Gaspar del Bufalo and St. Mark|
|Saint day||October 21 and April 25|
Originating in the Early Middle Ages (the name deriving perhaps from the Latin sommum, meaning "top"), Sonnino is mentioned for the first time in a Papal bull from 999. It was held first by the De Sompnino, and was acquired by Onorato I Caetani in 1369. The castle was inhabited by the Caetani d'Aragona until they sold it in 1469 to the Colonna, who were later followed by the Antonelli and the Talani families.
|This Lazio location article is a stub. You can help Wikipedia by expanding it.|
- "Superficie di Comuni Province e Regioni italiane al 9 ottobre 2011". Istat. Retrieved 16 March 2019.
- "Popolazione Residente al 1° Gennaio 2018". Istat. Retrieved 16 March 2019.