Leonard Barr was a comic and eccentric dancer who was famous for truly being Dean Martin's uncle, as he was the brother of Dino's mother, Angela Crocetti (née Barra). They were Italians of mixed Neapolitan and Sicilian ancestry. Born Leonard Barra on September 27, 1903 in West Virginia, he became a stand-up comic who delivered one-liners dead-pan, ...