Last name Donlan (Donlan 
) , across the world, is quite a rare surname. The surname Donlan is habitual in Ireland, where it is a rare surname, Australia, and the United Kingdom. Measured by absolute frequency, it is the most numerous in the United States, the United Kingdom, and Australia. Very seldom, Donlan is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Donlan | United Kingdom, Ireland, Canada, Australia, United States |
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edmond j. donlan politician in Massachusetts, US, US (b. 1899) |
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yolande donlan American actress (1920-2014), US (b. 1920) |
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charles j. donlan US (b. 1916) |
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| james donlan American actor (1888-1938), US (b. 1888) |
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| seán patrick donlan lectures in law at the University of Limerick, IE (b. 1900) |
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c. josh donlan American ecologist, US (b. 1972) |
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| kenneth donlan newspaper editor (b. 1927) |
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| thomas c. donlan (b. 1917) |
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stuart donlan English rugby league footballer and coach, IE (b. 1978) |
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| walter donlan (b. 1934) |
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| walter francis donlan US (b. 1935) |
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| steve donlan English rugby league footballer, GB (b. 1954) |
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| joseph a c donlan researcher |
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| matt donlan college basketball player (2014–2017) South Dakota State; Youngstown State |
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| rodney m donlan researcher |
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