Mathilda Ancona was a daughter of Israël Ancona and Naatje Springer. She married Hijman Allegro in 1926 in Amsterdam. Stadsarchief Amsterdam, archiefkaart Mathilda Ancona
In addition, a Jokos file (number 50735) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.