When William Jewett Fulkerson was born on 31 August 1850, in Benton, Benton, Yates, New York, United States, his father, Caleb Fulkerson, was 41 and his mother, Cordelia Webster, was 38. He married Winnifred E. Tupper on 16 February 1882, in Fenton, Genesee, Michigan, United States. They were the parents of at least 1 son. He lived in Big Flats, Chemung, New York, United States in 1860 and Milo, Yates, New York, United States in 1865. He died on 28 June 1895, in Saginaw, Michigan, United States, at the age of 44.