Boezemsingel 73 b, Rotterdam Previous house Next house Residents in April 1942 Louis de Leeuw 1889 - 1943 Sonja de Leeuw 1935 - 1943 Jetje de Leeuw 1918 - 1942 Saartje de Leeuw 1914 - 1942 Salomon de Leeuw 1913 - 1942 Rachel de Leeuw-Ensel 1887 - 1943 Family member of Louis de Leeuw and his family date unknown