Marie was the daughter of Haven Charles and Josephine Rosetta (Moye) Stewart, who were married in Evart, Osceola County, Michigan, on 9 May 1888. In the 1910 U.S. Census, Haven's household was enumerated twice. The family was Haven C. (50), wife Josephine R. (50), Marie (19), H. C. Rex (18) [Haven Charles Rex], and Deane G. (13). Evidently Haven and Josephine had another daughter named Marie right after this first Marie died.