Surname Mulholland (Mulholland 
, Малхолланд 
) , globally, is a common cognomen. The cognomen Mulholland is characteristic of Ireland, where it is quite a common surname, New Zealand, where it is quite a rare surname, and the United Kingdom. In absolute terms, it most frequently occurs in the United States, the United Kingdom, and Australia.
| VARIANT | COUNTRY |
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| Mulholland | Canada, Australia, United States, United Kingdom, Ireland |
| Малхолланд | Russia, Ukraine |
| thomas mulholland (1756-1820) (b. 1756) |
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clara mulholland Irish writer (1836-1918/34), GB (b. 1836) |
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st. clair augustine mulholland United States Army Medal of Honor recipient, GB (b. 1839) |
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| andrew mulholland Irish cotton and linen manufacturer (b. 1791) |
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rosa mulholland writer (1841-1921), GB (b. 1841) |
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| andrew mulholland (1792-1866) (b. 1792) |
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| st. clair kelburn mulholland (1798-1872) (b. 1798) |
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| james mulholland American politician, US (b. 1803) |
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henry mulholland, 2nd baron dunleath British politician (1854-1931), GB (b. 1854) |
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william mulholland engineer and builder of the Los Angeles Aqueduct (1855-1935), IE (b. 1855) |
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| samuel mulholland American politician, US (b. 1811) |
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| john mulholland, 1st baron dunleath British Baron (1819-1895) (b. 1819) |
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william walter mulholland New Zealand farmer, farmers' union leader (1887–1971), NZ (b. 1887) |
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| robert mulholland Canadian politician, CA (b. 1838) |
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| william mulholland British KC (b. 1843) |
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