William Siddoway was a member of the Uintah District School Board. William came to the Vernal area in 1888. He married Emily Dunster. He was very involved in the sheep industry and served on the county and state Wool Growers Association. William was one of the incorporators of Vernal Milling Company, Vernal Power and Light Company, Vernal Drug Company, Vernal Amusement Company, Uintah Abstract Company, and the Leslie Ashton Hardware Company. He was a county commissioner and served as the president of the board of education. William died october 25, 1950