Family name Moylan (Moylan 
, Мойлан 
) , throughout the world, is quite a common cognomen. The cognomen Moylan is habitual in Ireland, where it is quite a common surname, Australia, where it is quite a rare surname, and New Zealand. Measured by absolute frequency, it is commonest in the United States, Ireland, and Australia.
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| Moylan | United Kingdom, Australia, Ireland, United States, Canada |
| Мойлан | Ukraine |
| francis moylan Roman Catholic Bishop of Cork (b. 1735) |
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| stephen moylan American general (1737-1811), IE (b. 1737) |
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| denis moylan (1760-1832) (b. 1760) |
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william moylan Jesuit priest, US (b. 1822) |
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myles moylan American Army officer (1838–1909), US (b. 1838) |
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| denis creagh moylan (1794-1849) (b. 1794) |
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hannah moylan first Irish woman to gain a bachelors degree in Science, IE (b. 1867) |
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| emily ann moylan (1822-1883) (b. 1822) |
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david moylan (b. 1874) |
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catherine moylan American actress (1904-1969), US (b. 1904) |
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mary-ellen moylan American ballet dancer 1925–2020, US (b. 1925) |
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| john moylan British civil servant (b. 1882) |
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| seán moylan Irish politician (1888-1957), IE (b. 1888) |
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| moylan mcdonnell Canadian ice hockey player, CA (b. 1889) |
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| lloyd moylan American painter, muralist, and printmaker, US (b. 1893) |
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