Willis married Simmons, Sarah MILDRED on 14 Feb 1915 in Weaubleau, Hickory, Missouri, USA. Sarah (daughter of Simmons, Elisha Douglas and McGuire, Katherine Lucinda) was born on 11 Dec 1895 in Nelson, Saline, Missouri, USA; died on 6 Mar 1968 in Terracina Convalescent Hospital, Redlands, San Bernardino, California, USA; was buried on 8 Mar 1968 in Desert Lawn Memorial Park, Calimesa, Riverside, California, USA. [Group Sheet] [Family Chart]

1. Niblack, Mary Lucille was born on 26 Jul 1916 in Tyler Township (Inactive), Hickory, Missouri, USA; died on 9 Jan 1998 in California, USA; was buried in Jan 1998 in Loma Linda, San Bernardino, California, USA.
2. Niblack, Clifford Dee was born in 1920 in Tyler Township (Inactive), Hickory, Missouri, USA; died on 5 Jun 1996 in Las Vegas, Clark, Nevada, USA; was buried in Jun 1996 in Caldwell, Canyon, Idaho, USA.
3. Niblack, Dorothy Maxine was born in 1926 in Tyler Township (Inactive), Hickory, Missouri, USA; died on 8 Aug 1996 in Las Vegas, Clark, Nevada, USA; was buried in Aug 1996 in Henderson, Clark, Nevada, USA.