Family: Harrington E. Underhill & Lula M. Etter
| Wife | Female Lula M. Etter |
| Born | 8 Jan 1887 | Illiopolis, Sangamon Ciounty, Illinois  |
| Died | 1964 | |
| Buried | ||
| Father | ||
| Mother | ||
| Child 1 | Male Harry Underhill Jr |
| Born | 12 Oct 1920 | Illinois |
| Died | 27 Mar 1986 | Tucson, Pima County, Arizona |
| Buried | Aft 27 Mar 1986 | Arivaca Cemtery, Arivaca, Pima County, Arizona |
| Spouse | Sally Surdell | Family Group Sheet | |
| Married | 1951 [1] | |
| Spouse | Dorothy Annabell Henderson | Family Group Sheet | |
| Married | Bef 27 Mar 1986 | |