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Male Leo Lambert Click to view Leo Lambert in the family tree

1   Leo's father was Joseph Lambert and his mother was Agnes LaRoche.  His paternal grandparents were Desire Lambert and Rosalie Du Clos. He had three brothers and four sisters, named Adelore, Arthur, Eugene, Phoebe, Alice, Bernadette and Blanche.1 

Family Details of Leo's family with Madeleine

1 phelps.FTW @ Tree #1353
Further sources/citations:
World Family Tree Vol. 4, Ed. 1 @ Tree #0574, 0574.ftw