Cognomen O'Gorman (O'Gorman 
) , across the world, is quite a common surname. The family name O'Gorman is characteristic of Ireland, where it is quite a common surname, Australia, where it is quite a rare surname, and New Zealand. Not in comparison with a country's population, it most frequently occurs in Ireland, the United Kingdom, and Australia.
| VARIANT | COUNTRY |
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| O'Gorman | United Kingdom, United States, Ireland, Australia, Canada |
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miguel o'gorman Argentinian physician and university professor, AR (b. 1749) |
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| chevalier o'gorman Irish army officer in the French service and antiquarian (b. 1732) |
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| victor martin o'gorman HT (b. 1743) |
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| tomás o'gorman IE (b. 1760) |
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purcell o'gorman Irish nationalist politician (b. 1820) |
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enrique o'gorman Argentinian politician, AR (b. 1823) |
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camila o'gorman Argentine socialite, AR (b. 1825) |
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eduardo o'gorman politician (1827-1901), AR (b. 1827) |
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| james myles o'gorman Catholic bishop, US (b. 1804) |
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mervyn o'gorman English engineer, GB (b. 1871) |
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| ferdinand alfred o'gorman FR (b. 1825) |
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| edith o'gorman British writer, IE (b. 1842) |
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| thomas o'gorman Catholic bishop (1843-1921) (b. 1843) |
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juan o'gorman Mexican artist and architect (1905-1982), MX (b. 1905) |
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| david o'gorman Irish politician (b. 1865) |
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