The answer is George. Richard Chamberlain's full name is George Richard Chamberlain. He is an American actor, singer, and author. Chamberlain is best known for his television roles as Dr. Kildare in the 1960s medical drama series Dr. Kildare and as Jason Bourne in the 1988 television miniseries The Bourne Identity.
The Enigmatic Journey of Richard Chamberlain: An English Quiz on the Illustrious American Actor