William married Emma A. Dora Kyser 25 Nov 1875, Boone County, Indiana, USA. Emma (daughter of Samuel Kiser and Mary Jane Utter) was born 26 Jan 1859, Thorntown, Boone, Indiana, USA; died 20 Nov 1929, Chicago, Cook, Illinois, USA; was buried 22 Nov 1929, Thorntown, Boone, Indiana, USA. [Group Sheet]

1. Willard Nelson Endicott was born 5 Nov 1876, Boone County, Indiana, USA; died 7 Jun 1944, Indianapolis, Marion, Indiana, USA.
2. Harry Carlyle Endicott was born 1880, Indiana; died 5 Sep 1913, Jackson, Jackson, Michigan, USA.