- Born June 13, 1881.
- Parents were FRED LYMAN HARTWELL and LYDIA C. GRIFFIN.
- Married MARGARET M. WILSON on June 10, 1908. Margaret was born November 14, 1887 in New Brunswick, Canada; and died at age 32. Her father was FRANK WILSON.
- Died February 5, 1952 in Yakima, Yakima County, Washington.
- ALTHEA MAY HARTWELL, born April 2, 1909 in Maine. Married LLOYD NOBLITT on September 3, 1933.
- VALENTINE HARTWELL, born February 14, 1911 in Toppenish, Yakima County, Washington. Married OBER T. HENDERSON on August 7, 1943.
- DOROTHY HARTWELL, born November 18, 1913 in Toppenish, Yakima County, Washington. Married MALVIN PASCHE, in 1931. Married THOMAS GREGGOR.
- PAULINE HARTWELL, born August 8, 1915 in Yakima, Yakima County, Washington. Married PAUL PATTERSON. Married MARSHALL SILVERS.
- LYMAN ABBOTT HARTWELL, born November 6, 1916 in Yakima, Yakima County, Washington. Married OPAL in 1942.
- LOUISE A. HARTWELL, born in White Swan, Washington. Married THEODORE SIMPSON. Married STANLEY F. VOGEL.
- The Hartwells of America : 1962 Supplement to the 1956 Hartwell Genealogy, by John F. Hartwell, pub. unknown, Waterville ME, 1962. Page U