| Verfasser | Häufigkeit |
| Eckhardt, Karl August 1901-1979 |
239 |
| Eckhardt, Albrecht 1937-2023 |
128 |
| Eckhardt, Wilhelm A. 1929-2019 |
49 |
| Eike von Repgow 1180-1233 |
32 |
| Eckhardt, Alexander |
19 |
| Eckhardt, Johann David Adam 1743-1807 |
12 |
| Eckhardt-Henn, Annegret 1957- |
10 |
| Eckhardt, Alfred |
9 |
| Eckhardt, Andreas |
8 |
| Eckhardt, Anne 1962- |
7 |
| Eckhardt, Albrecht |
5 |
| Eckhardt, André |
5 |
| Eckhardt, Anne |
5 |
| Eckhardt, Axel |
5 |
| Borchling, Conrad 1872-1946 |
4 |
| Eckhardt, Alexandre |
4 |
| Homeyer, Carl Gustav 1795-1874 |
4 |
| Adler, Jacob Georg Christian 1756-1834 |
3 |
| Brunner, Romuald 1959- |
3 |
| Clemm, Ludwig 1893-1975 |
3 |