Plantage Parklaan 21 III, Amsterdam Previous house Next house Residents in February 1941 Ephraim Groenstad 1890 - 1943 Sara Judith Groenstad-van Kollem 1888 - 1943 Eleazer Groenstad 1925 - 1943 Child of Ephraim Groenstad and his family date unknown Child of Ephraim Groenstad and his family date unknown Hanna Speijer-Groenstad 1923 - 1943