Hartog Aandagt was a son of Jacob Aandagt and Rebecca Slier. He married 30 August 1911 in Amsterdam to Rachel Croese, a daughter of Salomon Croese and Judith Goudsmit.
The other eight of his eleven siblings, who have been killed during the Holocaust were Betje, Mozes, Matthea, Rachel, Isaac, Philip,…
In addition, a Jokos file (number 31459) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.