Dukes of Sora Duques de Sora Records #4 Holders Family filter On/Off 2 Gregorio Boncompagni, 2nd duke of Sora * 1590 6 Antonio Boncompagni, 3rd prince of Piombino * 1658 Gregorio I Boncompagni, 5th duke of Sora e Arce * 1642 Ugo Boncompagni, duke of Sora * 1614 Corrections and Updates To suggest a correction or an update. Click Here