Caminiti was married to Mary Alioto, daughter of former Milwaukee family boss John Alioto, with whom he had three children. He came to prominence when he was installed as Frank Balistrieri's Consigliere, a position he allegedly held from 1961 when Balistrieri became boss until the 1990s. In 1993, Frank Balistrieri died and his brother Peter Frank Balistrieri, succeeded him as boss. Caminiti died on January 30, 2014 at the age of 87.