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He has an autistic son. Graduated from Wesleyan University in 1954. Direct descendent of Paul Revere. Although best known for playing the Catholic Priest, Father John Mulcahy, on "M*A*S*H", he is actually a Methodist. He didn't appear in the pilot show. Member of the Sigma Chi Fraternity When auditioning for his "M*A*S*H" role, Christopher essentially ignored the monologue prepared for him, and instead ad-libbed a rambling speech in a priestly tone. While the producers were disappointed that Christopher didn't deliver his prepared lines, they liked his performance and manner well enough to offer him the role - on the condition that from then on, he would stay with the script. Attended New Trier Township High School as did Adam Baldwin, Bruce Dern, Charlton Heston, Virginia Madsen, Ralph Bellamy, Rock Hudson, and Ann-Margret. Longtime student of Homeric (classical) Greek. Admitted that although his character on MASH was a amateur boxer, he had no knowledge nor had ever boxed before production of the show.