Hedwig was Siegfried's third wife. She came from Freyung in Lower Bavaria. His second wife was her sister Elsa Weigert. Their mother was Mathilde Weigert, née Finger.
Carola was from his first marriage.
In addition, a Jokos file (number 10422) on this household is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.