Patrick Duffy is 75 years and 7 month(s) old. He was born in 17 Mar, 1949. Patrick Duffy is famous American actor, who was born on March 17, 1949 in Townsend, Montana. He is renowned for his role in CBS prime time soap opera Dallas, where he can be seen as Bobby Ewing. The show ran from 1987 to 1985 and 1986 to 1991.