| Singular | Plural | |
|---|---|---|
| Nominativ | castellumque, castellom, castellum | castella, castellaque |
| Genitiv | castelli, castellique | castellorum |
| Dativ | castello, castelloque | castellis, castellisque |
| Akkusativ | castellumque, castellum | castella, castellaque |
| Ablativ | castello, castelloque | castellis, castellisque |
| Vokativ | castellumque, castellum | castella, castellaque |