- Relationship to Roger Moore: 3rd cousin: Generation: Four
- Birth: Kern County, California, USA
- Marriage #1: Marily Joyce Edwards; 17 May 1952; Los Angeles County, California, USA
- May be up to four children with Joyce and Eugene
- Marriage #2; Mellie Stover; 18 Aug 1972; Mendocino County, California, USA
- Death: 12 Dec 1972, Gold Beach, Curry County, Oregon, USA
Eugene's brother Marion James Vincent married Dorothy Fern Wallace's sister Rita Evelena Wallace.