Alvah Dalton Rich, Sr. was born to Jonathan and Rosanna B. (Dix) Rich on April 3, 1872 in Tremont, Maine. Alvah married Evelyn Frances Pomroy (1885-1973), daughter of John William and Melissa Myra (Dow) Pomroy on June 7, 1908 in Tremont. Alvah Dalton Rich, Sr., died on September 3, 1908 in Bass Harbor, Maine, at the age of 36, just three months after his marriage. His widow, Evelyn Frances (Pomroy) Rich married Charles Edwin Hamblen on December 1, 1915 in Tremont.