Clara Drielsma was a daughter of Benjamin Drielsma and Grietje van Gelder. She got married to Benjamin Haagens. They lived in Middelharnis, where Clara Haagens-Drielsma on 20 July 1941.
Jewish Historical Museum, Documents collection, inv.nr 3808
In July 1941, an obituary was placed in Het Joodsche Weekblad for C. Haagens-Drielsma.
Het Joodsche Weekblad, 25 July 1941, 11
