When Sherman Benjamin Wilcox was born on 18 October 1873, in Mount Pleasant, Sanpete, Utah, United States, his father, Sherman Theophilus Wilcox, was 40 and his mother, Helena Dalton, was 17. He married Blanche Ollie Osborne on 30 September 1899, in Tooele, Tooele, Utah, United States. They were the parents of at least 3 sons and 1 daughter. He lived in Clover, Tooele, Utah Territory, United States in 1880 and Election Precinct 10, Salt Lake, Utah, United States in 1930. He died on 23 October 1938, in San Francisco, San Francisco, California, United States, at the age of 65, and was buried in Colma, San Mateo, California, United States.