Family name Donnellan (Donnellan 
) , globally, is quite a rare last name. The last name Donnellan is habitual in Ireland, where it is quite a common surname, Australia, where it is quite a rare surname, and the United Kingdom, where it is a rare surname. Not in comparison with a country's population, it most frequently occurs in Ireland, the United States, and Australia.
| VARIANT | COUNTRY |
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| Donnellan | United Kingdom, Malaysia, Australia, Ireland, United States |
| nehemiah donnellan Archbishop of Tuam. (b. 1501) |
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| james donnellan Irish politician (b. 1588) |
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| nehemiah donnellan Irish politician (b. 1649) |
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| anne donnellan Irish promoter of literature, learning, and the arts, and literary critic, IE (b. 1700) |
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| christopher donnellan Irish clergyman, IE (b. 1702) |
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john w. donnellan American politician (1841-1917), IE (b. 1841) |
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michael donnellan Irish politician, IE (b. 1900) |
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| steve donnellan Australian rules footballer (1900-1934) (b. 1900) |
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| frank donnellan Australian rules footballer, AU (b. 1907) |
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| thomas andrew donnellan Catholic archbishop (1914-1987), US (b. 1914) |
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| michael donnellan London couture designer 1940s-70s, IE (b. 1915) |
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luke donnellan Australian politician, AU (b. 1966) |
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| philip donnellan British journalist, GB (b. 1924) |
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| keith donnellan philosopher, US (b. 1931) |
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cyril donnellan Irish hurler, IE (b. 1985) |
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