Ambonstraat 9 a, Groningen Previous house Next house Residents Salomon Lichtenstädter 1864 - 1943 Emma Lichtenstädter-Löwenstein 1873 - 1943 Louis Tromp 1898 - 1943 Erna Tromp-Goldschmidt 1913 - 1942 Aaltje Tromp 1941 - 1942