David Janssen was born David Harold Meyer in 1931 in Naponee, Nebraska, to Berniece Mae (Graf) and Harold Edward Meyer, a banker. He was of German, and some Swiss-German and Ulster-Scots, descent. David took the surname of his stepfather, Eugene Janssen. The Janssen family settled in Hollywood when he was a teenager and he attended Fairfax High School, where he developed an interest in acting. His film debut was a bit part in It's a Pleasure (1945), and at the age of 18 signed a contract with 20th Century-Fox. However, the studio dropped him a…