O'Neill comes from Irish Gaelic naming and is linked to long-standing dynastic and regional histories.
Meaning and Origin
The prefix O' is a common Anglicized marker of Gaelic patronymic lineage. O'Neill is often traced to families connected with early Irish ruling groups.
Geographic Distribution
O'Neill is strongly associated with Ireland, especially Ulster, and is also common in Britain, North America, and Australia due to migration.
Historical Records and Context
The name appears in annals and later legal records. It expanded globally through migration from Ireland to Britain, North America, and Australia.
Spelling Variants
- Oneill
- O Neill
- O'Neal
Notable People
- Eugene O'Neill (playwright)
- Hugh O'Neill, Earl of Tyrone (historical figure)