Surname Holleran (Holleran 
) , in the entire world, is quite a rare family name. The cognomen Holleran is characteristic of Ireland, where it is quite a rare surname, the United States, where it is a rare surname, and the United Kingdom. Measured by absolute frequency, it is commonest in the United States, the United Kingdom, and Canada.
| VARIANT | COUNTRY |
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| Holleran | United Kingdom, Australia, Canada, United States, Ireland |
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andrew holleran American writer, US (b. 1944) |
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| tommy holleran American-football player (1897-1930), US (b. 1897) |
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| thomas j. holleran American judge (1906-1984), US (b. 1906) |
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| joseph j. holleran (b. 1904) |
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| tom holleran (b. 1916) |
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| carol holleran (b. 1949) |
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| adam holleran badminton player, US (b. 1960) |
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| demer holleran American squash player, US (b. 1967) |
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| katherine m holleran researcher |
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| connie holleran Former executive director of the International Council of Nurses. |
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| john p holleran researcher |
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| laurena holleran researcher (ORCID 0000-0002-8354-3670) |
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| max holleran researcher |
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| grainne holleran researcher |
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| claire holleran (b. 1979) |
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