Jacob Kokernoot was the widower of Mietje Fransman, who had died in Januari 1940. The couple had three children: Abraham, Jetje and Leman.
Amsterdam Municipal Archives; record card of Jacob Kokernoot
In addition, a Jokos file (number 14112) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.