Familie: Karl Grenz / Annemarie Christine Gerdes (F18)
verh. Mai 1980 | Theodor Heinrich Gerdes (1909-1944) 
|
 | Caroline Friederike Christine Christians (1901-1980)
|
 | Georg Theodor Gerdes (1934-2023)  |
 | Erika Inge Gerdes (1935-2020) |
 | Brigitte Lina Gerdes (1936-2010) |
| Thea Johanna Gerdes (1939-2025) |
 | Theodor Gerd Gerdes (1941-1989) |
 | Hans-Werner Gerdes (1943-2020) |
 | Annemarie Christine Gerdes (1930-2014)
|
 | Karl Grenz (1925-1990) |