Helena Goudeketting was a daughter of Daniel Goudeketting and Marianne Munnikendam. She married in 1928.
Stadsarchief Amsterdam, archiefkaart Daniel Goudeketting
In addition, a Jokos file (number 17099) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.