Jacoba Keetje Meijer was a daughter of Simon Meijer and Helena Troostwijk. She had another brother Bertus Samuel and a sister Roosje. Her mother, she self and her brother and sister have been killed in the Shoah. Her father survived the Holocaust.
Streekarchief Midden Holland - Joodse families 1750-1950 (Jacoba Keetje Meijer).