Richard William Bull (June 26, 1924 – February 3, 2014) was an American film, stage and television actor. He was best known for his performances as "Doc" on Voyage to the Bottom of the Sea and Nels Oleson on Little House on the Prairie.
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Personal life
Bull was born on June 26, 1924, in Zion, Illinois. After years of living in Los Angeles, he moved back to Chicago in 1994 with his wife Barbara Collentine.
Bull fell into acting by accident. “I never gave a serious consideration about becoming an actor. As a senior in high school, I decided to study music, but a friend suggested we attend the Goodman Theater School. In two weeks the friend dropped out, but I was hooked.” There was a three-year interruption while he served as a radio operator for the Army Air Corps, but when he was discharged in 1946 he resumed his acting studies at Goodman.
It was at the Goodman that he met his wife, also a notable actress, Barbara Collentine, and they became engaged in January 1948.
In 2012, the couple moved back to California to reside in the Motion Picture & Television Fund retirement home.




