A biography & interesting family history of Warren J. Jennison is included in "Montana, Its Story and Biography", Vol 3, pages 1170-1171.Parents: Charles W. Jennison, b. 1858, Shelburne, VT, son of John Wesley Jennison and and Jane Ann Lufkin; on 2 Oct 1882, Charles W. married Miss Josephine Almira Lathrop, of Appleton, MN, daughter of Hon. A.W. Lathrop. Josephine died 30 Jun 1896. Four sons: Warren Judson, Wesley Lathrop (b. 1887, died at age 18), Alfred Willis, b. 1892, John Charles, b. 1894. In 1908, Tacoma, WA, Charles W. married Miss Claribell Watson, born in Michigan, daughter of John Watson.
In 1909, Rugby, ND, Warren J. Jennison married Miss Bernice Josephine Harmon, born in Indiana, daughter of Theopholis K. Harmon.Jennison child: Wesley Grant, b. 1911.