Willebrordusstraat 15 b, Rotterdam Previous house Next house Residents in April 1942 Peiretz Gelkopf 1908 - 1943 Rachel Gelkopf-Blog 1915 - 1943 Maria Esther Gelkopf 1942 - 1943 Rebecca Blog-Cosman 1891 - 1943 Simon Blog 1917 - 1943 Willem Blog 1910 - 1942