Root form: Cathal
Irish-language surnames
Ó Cathail, Uí Chathail, Ní Chathail
Male form
- Nominative
- Seán Ó Cathail
- Genitive
- Sheáin Uí Chathail
- Vocative
- a Sheáin Uí Chathail
Wife form
- Nominative
- Síle Uí Chathail
- Genitive
- Shíle Uí Chathail
- Vocative
- a Shíle Uí Chathail
Daughter form
- Nominative
- Síle Ní Chathail
- Genitive
- Shíle Ní Chathail
- Vocative
- a Shíle Ní Chathail
English-language surnames
- Cahill