| Sg. Indef. | ionatan |
| Sg. Def. | ionatanul |
| Pl. Indef. | ionatani; ionatane |
| Pl. Def. | ionatanii; ionatanele |
| Sg. Indef. | ionatan |
| Sg. Def. | ionatanului |
| Pl. Indef. | ionatani; ionatane |
| Pl. Def. | ionatanilor; ionatanelor |
| Singular | ionatanule |
| Plural | ionatanilor; ionatanelor |