| Birth | 1857 | John MCClure Simpson was born in 1857 in Indiana. |
| Marriage | about 1895 | He and Anna Delilian Freeman were married about 1895. |
| 1900 Census | 15 Jun 1900 | John MCClure Simpson appeared as head of household in the 1900 Federal Census of Avon, Coffey County, Kansas, as John M. Simpson. Living with him was his wife, Anna, and their children, Maude, Sarah and Lee. |
| 1910 Census | 19 Apr 1910 | John MCClure Simpson appeared as head of household in the 1910 Federal Census of Geneva, Allen County, Kansas, as John M. Simpson. Living with him was his wife, Anna, and their children, Maude, Sarah and Lee. |
| 1920 Census | 6 Feb 1920 | John MCClure Simpson appeared as head of household in the 1920 Federal Census of Geneva, Allen County, Kansas. Living with him was his wife, Anna. |
| Burial | 1924 | John MCClure Simpson was buried in 1924 in Colony Cemetery, located in Colony, Anderson County, Kansas. |
| Death | 1924 | He died in 1924. |
John MCClure Simpson