Don Placido de' Sangro (1881-1942) (1881–1942) Parents Donna Bianca Colonna Don Giovanni Andrea de' Sangro Children Don Lionello de' Sangro, 11th Prince of Fondi Siblings Don Ugone de' Sangro, 8th Prince of Fondi Donna Isabella de' Sangro dei Principi di Fondi Don Oderisio de' Sangro, 6th Prince of Fondi Partners Donna Ernestina Avati