O'Callaghan surname: meaning and origin
O'Callaghan means descendant of Ceallachán, a diminutive of Ceallach. It is a native Gaelic Irish family from Cork (Duhallow).
| Irish form | Ó Ceallacháin |
|---|---|
| Meaning | descendant of Ceallachán, a diminutive of Ceallach |
| Home region | Cork (Duhallow) (Munster) |
| Origin | Gaelic |
| Variants | Callaghan, Callahan |
History of the O'Callaghan name
The O'Callaghans were lords of Pobal Uí Cheallacháin in north-west Cork, and the surname is also written Callaghan and Callahan.
More surnames from Munster
- Barryde Barra · from Barry
- O'BrienÓ Briain · descendant of Brian
- CahillÓ Cathail · descendant of Cathal
- McCarthyMac Cárthaigh · son of Cárthach
- CaseyÓ Cathasaigh · descendant of Cathasach
- CollinsÓ Coileáin · descendant of Coileán
Frequently asked questions
What does the surname O'Callaghan mean?
O'Callaghan (Irish: Ó Ceallacháin) means descendant of Ceallachán, a diminutive of Ceallach.
What is the Irish spelling of O'Callaghan?
The Irish-language form of O'Callaghan is Ó Ceallacháin.
Where is the surname O'Callaghan from?
O'Callaghan is a native Gaelic Irish family, associated with Cork (Duhallow) in Munster.
What are other spellings of O'Callaghan?
Related spellings and forms include Callaghan, Callahan.