Don Sigismondo, dei Principi Ruspoli 1787 - 11 May 1849 (1787–1849) Parents Francesco Ruspoli, 3rd Prince of Cerveteri Luitpoldina Gräfin von Khevenhüller-Metsch Children Don Enrico, dei Principi Ruspoli Siblings Alessandro Ruspoli, 4th Prince of Cerveteri Camillo Ruspoli Bartolomeo Ruspoli and Khevenhüller-Metsch