Family name Mcgillicuddy (Mcgillicuddy 
) , around the globe, is quite a rare surname. The surname Mcgillicuddy is habitual in Ireland, where it is quite a rare surname, New Zealand, where it is a rare surname, and the United States. Measured by absolute frequency, it most frequently occurs in the United States, Ireland, and the United Kingdom.
| VARIANT | COUNTRY |
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| Mcgillicuddy | Canada, United Kingdom, United States, Ireland, Australia |
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daniel j. mcgillicuddy American politician (1859-1936), US (b. 1859) |
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| reg mcgillicuddy Australian rules footballer (1891-1922), AU (b. 1891) |
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| john mcgillicuddy American banker, US (b. 1930) |
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daniel p. mcgillicuddy politician in Massachusetts, US, US |
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| michael mcgillicuddy (b. 1950) |
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| dennis j mcgillicuddy researcher (b. 1965) |
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| damian mcgillicuddy British photographer, GB (b. 1970) |
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| john mcgillicuddy researcher |
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| fiona c mcgillicuddy researcher ORCID ID = 0000-0003-3623-3503 |
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| ellen mcgillicuddy Peerage person ID=503904 |
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| gerry mcgillicuddy Peerage person ID=441059 |
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| richard mcgillicuddy Peerage person ID=503903 |
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| cornelius mcgillicuddy Peerage person ID=351212 |
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| dennis joseph mcgillicuddy Ph.D. Harvard University 1993 |
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| susan mcgillicuddy |
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