Gretchen Corbett was born on August 13, 1945 in Portland, Oregon, USA as Gretchen Hoyt Corbett. She is an actress, known for The Rockford Files (1974), Magnum, P.I. (1980) and Otherworld (1985). Gretchen Corbett was born on August 13, 1945 in Portland, Oregon, USA as Gretchen Hoyt Corbett. She is an actress, known for The Rockford Files (1974), Magnum, P.I. (1980) and Otherworld (1985).