Lion Mordechai Wagenaar was arrested in 1943. A detailed description of the arrest was published in: G. Meerhoek, Dienaren van het gezag. De Amsterdamse politie en de Duitse bezetting (Amsterdam 1999) 302.
Ella Helena Dzialoszynski married Alexander Wagenaar in 1918. He died in 1930. Abraham Wagenaar was their son.
Stadsarchief Amsterdam, archiefkaart Ella Helena Dzialoszynski
In addition, a Jokos file (number 15569) on this family is at the Amsterdam Municipal Archive. Access is subject to authoriz…