| Singular | Plural | |
|---|---|---|
| Nominativ | patriarches | patriarchae |
| Genitiv | patriarchai, patriarchae | patriarcharum, patriarchum |
| Dativ | patriarchai, patriarchae | patriarchabus, patriarchis |
| Akkusativ | patriarcham, patriarchen | patriarchas |
| Ablativ | patriarche, patriarcha | patriarchabus, patriarchis |
| Vokativ | patriarche, patriarcha | patriarchae |