- Born February 11, 1880 in Kirkwood, Warren County, Illinois.
- Parents were DERRICK BARNARD HARTWELL and ONORA M. HARVEY.
- Married IRENE GRAY PATRICK on August 30, 1910. Irene was born March 3, 1890 in Louisville, Jefferson County, Kentucky. Her brother was EARL DENVER PATRICK, and her sister was KATHRYN NEAL PATRICK.
- CHERIE MAY HARTWELL, born in Buhl, Twin Falls County, Idaho.
- CHARLES GRANT HARTWELL, born in Waterville, Oregon.
- MILES MORTIMER HARTWELL, born in Eugene, Lane County, Oregon.
- The Hartwells of America..., by Lyman Wallace Densmore, Hartwell & Lorenzen, Saginaw MI, 1956. Page 151