Déclinaison / Conjugueur latin
| SINGULIER |
| Nom. | Petillius |
| Gen. | Petillii |
| Dat. | Petillio |
| Acc. | Petillium |
| Abl. | Petillio |
| Voc. | Petillie |
| PLURIEL |
| Nom. | Petillii |
| Gen. | Petilliōrum |
| Dat. | Petilliis |
| Acc. | Petillios |
| Abl. | Petilliis |
| Voc. | Petillii |
| SINGULIER |
| Nom. | Petilliă |
| Gen. | Petilliae |
| Dat. | Petilliae |
| Acc. | Petilliam |
| Abl. | Petilliā |
| Voc. | Petilliă |
| PLURIEL |
| Nom. | Petilliae |
| Gen. | Petilliārum |
| Dat. | Petilliis |
| Acc. | Petillias |
| Abl. | Petilliis |
| Voc. | Petilliae |
| SINGULIER |
| Nom. | Petillium |
| Gen. | Petillii |
| Dat. | Petillio |
| Acc. | Petillium |
| Abl. | Petillio |
| Voc. | Petillium |
| PLURIEL |
| Nom. | Petillia |
| Gen. | Petilliōrum |
| Dat. | Petilliis |
| Acc. | Petillia |
| Abl. | Petilliis | |