Izaak van Berg was a son of Abraham van Berg and Mietje Muller. He was married to Louisa van Coevorden in Groningen on June 27, 1888. She was a daughter of Mozes van Coevorden and Wilhelmina de Jonge.
Addition of a visitor of the website.
In addition, a Jokos file (number 40210) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.