Richard Barnes Mason was an American military officer who was a career officer in the United States Army and the fifth military governor of California before it became a state. He came from a politically prominent American family and was a descendant of George Mason, a framer of the U.S. Constitution and father of the Bill of Rights.
- Occupation
- military officer, colonel, governor
- Position held
- Governor of Alta California
- Citizenship
- United States
- Born
- January 16, 1797
- Died
