Eerste Middellandstraat 40 a, Rotterdam Previous house Next house Residents in April 1942 Jonas Valk 1915 - 1944 Roza Valk 1922 - 1942 Geertruida Valk 1921 - 1942 Frouwkje Valk 1919 - 1942 Nathan Valk 1917 - 1942 Family member of Jonas Valk and his family date unknown