| Birth | 1862 | William H. Simpson was born in 1862 in Poseyville, Gibson County, Indiana. |
| Possible Birthdate | Dec 1866 | According to at least one source, his birthdate was Dec 1866 birthplace was Indiana. |
1870 Census
(with Parents)
| 1870 | William appeared in the 1870 Federal Census of Shelby, Shelby County, Illinois, as Wm Simpson, in the household of his parents, Martha and William Franklin Simpson. He is a white male, age 4. He was born in Indiana. |
1880 Census
(with Parents)
| 1 Jun 1880 | William appeared in the 1880 Federal Census of Arkansas City, Cowley County, Kansas, as William H. Simpson, in the household of his parents, Martha and William Franklin Simpson. He is a single white male, age 17. Lives on Fourth Street. Son of head of household. Occupation is farm laborer. He attended school. He was born in Indiana. His mother and father were born in Indiana. |
| Marriage | | William H. Simpson and Dollie Montgomery Bogue were married. |
| Death | 1933 | William H. Simpson died in 1933. |
| Burial | 1933 | He was buried in 1933 in Parker Cemetery.  |
William H. Simpson