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- Oneill - Last Name Meaning & Origin
Oneill
- Used in: 3 countries
Popularity by Country
Oneill
Rank #633
Frequency
48,656 people (18.04 per 100k)
Ethnic Distribution
White 94.28% Hispanic 2.75% Black 1.01% Asian/PI 0.54% Native Am. 0.22% Two+ 1.2%
Similar Names to Oneill
Last names that start with O, sorted by popularity.