| | Norbert Heinrich Bossmann 1925–1979 Gertrude Collasius 1932–2016 | | | | Hermann Gerhard Bossmann 1893–1950 Maria Rettinghaus 1898–1949 | | |
| | | Herbert Kurt Willy Collasius 1905–1935 Katharina Kiefer 1909–1994 | | | | Ludwig Robert Wilhelm Collasius 1875–1917 Betty Elly Richter 1877–1931 | | |
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