Blasiusstraat 41 I, Amsterdam Previous house Next house Residents in February 1941 Abraham Isaac Groenstad 1891 - 1942 Esther Groenstad-Papier 1891 - 1942 Henri Abraham Groenstad 1927 - 1943 Isaac Abraham Groenstad 1925 - 1943 Simon Groenstad 1923 - 1943 Jansje Sealtiel-Groenstad 1921 - 1943