I am curious about this fellow. He and his family apparently had their origins on Saint Pierre et Miquelon. He served in WWI as John Eugene O'Dew http://www.canadiangreatwarproject.com/searches/soldierDetai...
When he enlisted in 1915, he claimed:
Place of Birth: Sydney, Cape Breton, Nova Scotia
Next of Kin: Victor O'Dew, father, Vulcan Avenue, Sydney, Nova Scotia
Date of Birth: January 20, 1897
(there is a note scribbled on his attestation paper, stating that his correct name was Francis Victor Roustan)
But he appears to have enlisted a second time in 1919, then claiming:
Name: John Eugene O'Dew
Place of Birth: Miqulion
Next of Kin: Rene Burel, uncle, Box 414, Sidney, N.S.
Date of Birth: February 28, 1897
In 1925 (as Francis Victor Roustan) he married Marie Migus in Montreal. (The church record is difficult to read, but I think indicates his parents as Joseph Roustan and Marie Roustan of Saint Pierre et Miquelon). About a year later he had a daughter, Frances Ellen Roustan, who died in 1936 (buried in Montreal).
I haven't been able to locate his father (Victor O'Dew as claimed in 1915) or parents (Joseph Roustan and Marie Roustan as claimed when married).
I have located his uncle "René Burel", whose wife was Léontine Claire Roustan (born 10 February 1884 in St Pierre, St Pierre & Miquelon, Dom-Tom, France; married 1903 in Sydney, Cape Breton, Nova Scotia, died 20 Mar 1947 in Boston, Suffolk, Massachusetts).
Family trees and census records for Léontine's family, don't indicate a brother Joseph (or any other brother who could have been Francis Victor Roustan's father).
I am leaning a little to another theory, that Francis Victor Roustan was an illegitimate child of Léontine's sister, Marie Joseph Aimée Rouston. In 1904, Marie Joseph Aimée Rouston married Victor Andreau; thus, Victor Andreau might correspond to Francis' father "Victor O'Dew" as indicated in the 1915 document.
I have also stumbled across documents referring to a John Eugene O'Dea who enlisted in 1914 as a part of the Newfoundland infantry.
It would be interesting to pull more details of this puzzle together. I welcome any input.