Francis Wayne Sinatra (born January 10, 1944 - March 16, 2016), professionally known as Frank Sinatra, Jr., was an American singer,songwriter, and conductor. Frank Jr. is the son of musician and actor Frank Sinatra, Sr. and his first wife, Nancy Barbato Sinatra. He is the younger brother of singer and actress Nancy Sinatra, and the older brother of television producer Tina Sinatra.