Male form
- Nominative
- Seán Mac Coisteala
- Genitive
- Sheáin Mhic Coisteala
- Vocative
- a Sheáin Mhic Coisteala
Wife form
- Nominative
- Síle Mhic Coisteala
- Genitive
- Shíle Mhic Coisteala
- Vocative
- a Shíle Mhic Coisteala
Daughter form
- Nominative
- Síle Nic Coisteala
- Genitive
- Shíle Nic Coisteala
- Vocative
- a Shíle Nic Coisteala
Male form
- Nominative
- Seán Mac Oisdealbhaigh
- Genitive
- Sheáin Mhic Oisdealbhaigh
- Vocative
- a Sheáin Mhic Oisdealbhaigh
Wife form
- Nominative
- Síle Mhic Oisdealbhaigh
- Genitive
- Shíle Mhic Oisdealbhaigh
- Vocative
- a Shíle Mhic Oisdealbhaigh
Daughter form
- Nominative
- Síle Nic Oisdealbhaigh
- Genitive
- Shíle Nic Oisdealbhaigh
- Vocative
- a Shíle Nic Oisdealbhaigh