On the record of his marriage to Joséphine in 1870, Antoine's age was given as 28 and his place of birth as Mahé, but a record of his birth has not yet been found. Only his mother, Antoinette Robert, was listed on this record, but she later married Jean Pierre Colette Gontier and one of Antoine's brother had a given name of Gontier, suggesting that Jean Pierre was the father of at least some of Antoinette's children.
Antoine and Joséphine had four children together, it is not known when he died.
MARRIAGE http://www.cgmrgenealogie.org/actes/acte_mari.php?xid=19165&xct=6120
01.08.1870 ROBERT Antoine (28 Y 4 m ) S of ROBERT Antoinette [Mahé] GUILLAUMIN Marie Joséphine (21 Y 5 m ) D of GUILLAUMIN Joseph and SAVY Alphonsine [Mahé] M1870/41
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