Giacomo Boncompagni was an Italian feudal lord of the 16th century, the illegitimate son of Pope Gregory XIII. He was also Duke of Sora, Aquino, Arce and Arpino, and Marquess of Vignola.
- Occupation
- aristocrat, soldier, territorial lord
- Citizenship
- Papal States
- Born
- May 8, 1548, May 8, 1548
- Died
- August 18, 1612