Cognomen Maccormac (Maccormac 
) , across the world, is a rare last name. The family name Maccormac is habitual in Ireland, where it is a rare surname, Canada, and the United Kingdom. Measured by absolute frequency, this name is the most popular in Canada, the United Kingdom, and the United States.
| VARIANT | COUNTRY |
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| Maccormac | Canada, Australia, United States, United Kingdom, Ireland |
Maccormack, Mccormac, Mccormack, and Маккормак
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william maccormac British surgeon (1836-1901), GB (b. 1836) |
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| john maccormac Irish timber merchant (b. 1791) |
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| henry maccormac British physician, GB (b. 1800) |
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| andrew maccormac Irish-born Australian painter (1826–1918) (b. 1826) |
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| sadie maccormac (born 1871) (b. 1871) |
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| surgn.-lt. john sides davies maccormac (1873-1916) (b. 1873) |
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| henry maccormac his grandson, dermatologist, GB (b. 1879) |
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| joan mary maccormac (1909-1975) (b. 1909) |
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| richard maccormac British architect, GB (b. 1938) |
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| john maccormac Peerage person ID=264111 |
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| mary maccormac Peerage person ID=264110 |
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| oscar james maccormac researcher (ORCID 0000-0002-2938-543X) |
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| marie ernestine lucie maccormac (died 1952) |
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| john maccormac Peerage person ID=360863 |
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| william maccormac Peerage person ID=398343 |
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