Josiah married Elizabeth G. Davis 16 Jun 1850, Perry County, IL. Elizabeth (daughter of Rev. Richard Gilliam Davis and Elizabeth Bradley) was born 16 Feb 1831, Jackson County, IL; died 27 Feb 1873, Perry County, IL; was buried 1873, Greenbriar Cemetery, Perry County, IL. [Group Sheet]

1. Richard G. Willis was born Abt 1851, Perry County, IL; died Yes, date unknown.
2. Alvira J. Willis was born 27 Nov 1854, Perry County, IL; died 28 Feb 1874, Perry County, IL; was buried 1874, Greenbriar Cemetery, Perry County, IL.
3. Susan Henrietta Willis was born 7 Aug 1859, Perry County, IL; died 8 Oct 1933, Hutchins, KS.
4. Mary C. Willis was born 21 Sep 1864, Perry County, IL; died 20 Dec 1876, Perry County, IL; was buried Dec 1876, Greenbriar Cemetery, Perry County, IL.
5. Hellen Candace Willis was born 30 Mar 1867, Perry County, IL; died 16 Feb 1873, Perry County, IL; was buried Feb 1873, Greenbriar Cemetery, Perry County, IL.
6. Julia A. Willis was born Abt 1869, Perry County, IL; died Yes, date unknown.