Root form: Diolún
Irish-language surnames
Diolún, Diolún
Male form
- Nominative
- Seán Diolún
- Genitive
- Sheáin Diolún
- Vocative
- a Sheáin Diolún
Female form
- Nominative
- Síle Diolún
- Genitive
- Shíle Diolún
- Vocative
- a Shíle Diolún
English-language surnames
- Dillon