Princes of Gallicano Principi di Gallicano First holder Marzio Colonna, 1st prince of Gallicano * 1584 Records #2 Holders Family filter On/Off 1 Marzio Colonna, 1st prince of Gallicano * 1584 Guillaume de Pierre de Bernis, prince Pallavicini et di Gallicano, marquis of Colonna * 1914 Corrections and Updates To suggest a correction or an update. Click Here