Male form
- Nominative
- Seán Ó Taidhg
- Genitive
- Sheáin Uí Thaidhg
- Vocative
- a Sheáin Uí Thaidhg
Wife form
- Nominative
- Síle Uí Thaidhg
- Genitive
- Shíle Uí Thaidhg
- Vocative
- a Shíle Uí Thaidhg
Daughter form
- Nominative
- Síle Ní Thaidhg
- Genitive
- Shíle Ní Thaidhg
- Vocative
- a Shíle Ní Thaidhg
Male form
- Nominative
- Seán Mac Taidhg
- Genitive
- Sheáin Mhic Thaidhg
- Vocative
- a Sheáin Mhic Thaidhg
Wife form
- Nominative
- Síle Mhic Thaidhg
- Genitive
- Shíle Mhic Thaidhg
- Vocative
- a Shíle Mhic Thaidhg
Daughter form
- Nominative
- Síle Nic Thaidhg
- Genitive
- Shíle Nic Thaidhg
- Vocative
- a Shíle Nic Thaidhg