Aimé and Elda (LeBlanc) Bonnevie with Claudette as a child and an unidentified baby, c. 1954.

Elda LeBlanc was in her late thirties when she married Aimé Bonnevie; she had Claudette, her only child, at the age of forty. This would have been considered a late pregnancy at the time! My grandfather's first wife died several years earlier of heart failure; Claudette has several half-siblings that are nearly a generation older than she.