When William Clyde Willes was born on 17 December 1883, in Heber City, Wasatch, Utah, United States, his father, William Sydney Willes, was 25 and his mother, Mary Lorintha Clyde, was 21. He married Reba Luella Beebe on 14 May 1906, in Provo, Utah, Utah, United States. They were the parents of at least 1 son and 2 daughters. He lived in Salt Lake City Ward 5, Salt Lake City, Salt Lake, Utah, United States in 1920. He died on 4 March 1947, in Portland, Multnomah, Oregon, United States, at the age of 63, and was buried in Portland, Multnomah, Oregon, United States.