Vogeltje Polak was a daughter of Izak Polak and Judikje Veltman. She married 1 juli 1914 in Amsterdam to Lion Zegerius, a son of Meijer Hartog Zegerius and Duifje Lap.
website wiewaswie.nl (marriage of Vogeltje Polak)
In addition, a Jokos file (number 20728) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.