Born ‎8- Jan 1888 Amsterdam, Netherland, died ‎19-2-1943 Auschwitz-Katowice, Poland‎, 54 or 55 years. Daughter of Salomon van Nierop - Pigeon and Bloemina Meijer - van Geuns‏

Born ‎9- Jul 1889 The Hague, Netherland, died ‎19-2-1943 Auschwitz-Biala Podleska, Poland‎, 53 or 54 years, ‎1st marriage to: Sophia van Nierop - Meijer, ‎2nd marriage to: Sara Kopuit - Matteman. Son of Barend Juda de Koning/ Elza and Deborah Hakker/ van der Kloo‏