Isaac Alter was the son of Eliazar Alter and Caroline Witstein. In 1892 he was married to Kaatje Alter, who died in 1913. Isaac Alter married Elisabeth Poons, daughter of Samuel Poons and Aaltje Hartog, in 1921.
Addition of a visitor of the website
Saartje is een dochter van Eliazar Alter en Caroline Witstein (zus van Isaac Alter).
Ze overleed 12 december 1942 in Apeldoorn, 79 jaar oud. Geboren 8 juli 1863.
Bron wiewaswie.nl (overlijden Saartje Alter)
Persoonskaart Stadsarchief Amsterdam
In addition, a Jokos file (number 18724) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.