| Verfasser | Häufigkeit |
| Ferreira de Castro, José Maria 1898-1974 |
67 |
| Castro Varela, María do Mar 1964- |
51 |
| Castro y Calvo, José María 1903-1987 |
23 |
| Abad Castro, María Concepción |
10 |
| Dhawan, Nikita 1972- |
9 |
| Ferreira de Castro, José María |
9 |
| Castro, Maria Silvia Portella de |
7 |
| Granja Castro, Dulce María 1953- |
7 |
| Castro, Maria João 1967- |
6 |
| Gómez de Avellaneda y Arteaga, Gertrudis 1814-1873 |
6 |
| Díaz, Nicomedes-Pastor 1811-1863 |
5 |
| Gomes, Ângela Maria de Castro 1948- |
5 |
| Luque de Castro, Maria Dolores |
5 |
| Appenroth, Max Nicolai 1986- |
4 |
| Castro, Hebe Maria Mattos de |
4 |
| Cruz Fernández Castro, Maria |
4 |
| Kant, Immanuel 1724-1804 |
4 |
| Valcárcel, Miguel |
4 |
| Blanco-Mesa, Fabio |
3 |
| Castro Argüelles, María Antonia |
3 |