Main country
Ireland
1,018 people
43% of total
Surname
Grehan
2,366 worldwide · 30 countries
2,366
Total population
30
Countries
1 in every 3,423,500
Frequency
Rarity
Rare
Dispersion
Regional
Top countries
1
Ireland
1,018
43%
2
England
345
14.6%
3
Australia
262
11.1%
4
United States
217
9.2%
5
France
144
6.1%
World distribution
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