Father was Scot, mother English and German heritage.
Rex Augustus Anderson was born on March 26, 1895, in Alturas, California, United States; son of Newspaper Publisher Clarence Walker Anderson. He grew up in northern California and went to high school in Roseville, California. He was trained as an accountant and served as the Secretary-Treasurer of the Rola Corporation at that time the largest manufacturer of Radio Speakers in the world. He resigned when Rola moved to Cleveland, Ohio from Oakland, California. He later served as the Secretary-Treasurer and Controller of LaVida Beverage Corporation in Fullerton, California. As World War II loomed he joined the US Government in Washington, DC. He attempted to join the Armed Forces but was declined due to age. Later in the war, he was an honorary general in TIIC in Germany. He retired from government service at the age of 67 and returned to his native California.