| Siebel, Albert | 1957 | ||
| Siebel, Anna Hermine Diederike | Meyer | Siebel Robert Carl Benjamin | 1949 |
| Siebel, Anna Maria | John | 1969 | |
| Siebel, Clara | Kampmann | Siebel Johannes Heinrich | 1932 |
| Siebel, Elfriede Luise | 1974 | ||
| Siebel, Elisabeth | 1951 | ||
| Siebel, Ernst | 1952 | ||
| Siebel, Günter | 1970 | ||
| Siebel, Karl Wilhelm Ernst | 1940 | ||
| Siebel, Maria | 1965 | ||
| Siebel, Paul | 1916 | ||
| Siebel, Viktoria | Molitor | 1929 | |
| Siebel, Walter | 1942 | ||
| Siebel, Wilh. Rudolf Richard | 1930 |