William married Hattie Myrtle Davis in Macon county, Illinois on 8 Nov 1888.
They were the parents of seven children: Sam Samuel (1890-1933),
Bernice Molley Whiteside Mosely (1891-1976), Amelia Elizabeth Whiteside Snelson (1892-1983), Dile Whiteside (1896-1968) Morris Albert "Squire" Whiteside (1898-1951), Leva Ann Whiteside Hawk (1900-1987) and John Henry Whiteside (1902-1973).
William lived south of Niantic, Illiois all his life.
Hattie Myrtle Davis Whiteside
1871–1933 (m. 1888)
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