Aaron Jacob de Groot and Sara Hakker had a son Jacob Aäron.
Haags Gemeentearchief, geboorteakte Jacob Aäron de Groot
Aaron Jacob (Arie) de Groot and Sara (Saartje) Hakker are mentioned frequently in the songbook for the marriage of their son Jacob Aäron to Anna Koekoek. Their daughters Roosje, Fijtje and Grietje are mentioned as well.
Collection Jewish Historical Museum
In addition, a Jokos file…
Person is in the National Database of Victims of Persecution