Male form
- Nominative
- Seán Ó hEathírn
- Genitive
- Sheáin Uí Eathírn
- Vocative
- a Sheáin Uí Eathírn
Wife form
- Nominative
- Síle Uí Eathírn
- Genitive
- Shíle Uí Eathírn
- Vocative
- a Shíle Uí Eathírn
Daughter form
- Nominative
- Síle Ní Eathírn
- Genitive
- Shíle Ní Eathírn
- Vocative
- a Shíle Ní Eathírn
Male form
- Nominative
- Seán Ó hEachthighearna
- Genitive
- Sheáin Uí Eachthighearna
- Vocative
- a Sheáin Uí Eachthighearna
Wife form
- Nominative
- Síle Uí Eachthighearna
- Genitive
- Shíle Uí Eachthighearna
- Vocative
- a Shíle Uí Eachthighearna
Daughter form
- Nominative
- Síle Ní Eachthighearna
- Genitive
- Shíle Ní Eachthighearna
- Vocative
- a Shíle Ní Eachthighearna