Mario Ruspoli, 2nd Prince of Poggio Suasa
Mario dei Principi Ruspoli was the 2nd Principe di Poggio Suasa, son of Emanuele Ruspoli, 1st Prince of Poggio Suasa and first wife Princess Caterina VogorideConachi. His greatgreatuncle was Cardinal Bartolomeo Ruspoli. He was also a greatgrandfather of actor Bart Ruspoli.
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Source: Wikipedia