Root form: Niallán
Irish-language surnames
Ó Nialláin, Uí Nialláin, Ní Nialláin
Male form
- Nominative
- Seán Ó Nialláin
- Genitive
- Sheáin Uí Nialláin
- Vocative
- a Sheáin Uí Nialláin
Wife form
- Nominative
- Síle Uí Nialláin
- Genitive
- Shíle Uí Nialláin
- Vocative
- a Shíle Uí Nialláin
Daughter form
- Nominative
- Síle Ní Nialláin
- Genitive
- Shíle Ní Nialláin
- Vocative
- a Shíle Ní Nialláin
English-language surnames
- Neylon
- Nealon
- Niland
- Neilan