Surname Brenan (Brenan 
) , around the globe, is a rare cognomen. The last name Brenan is characteristic of Ireland, where it is quite a rare surname, Australia, where it is a rare surname, and Bulgaria. Not in comparison with a country's population, it most frequently occurs in the United States, the United Kingdom, and Australia. Likewise, Brenan is the forename as well as the last name.
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| Brenan | Canada, Philippines, United Kingdom, United States, Australia |
| john brenan Brenan, John (b. 1625, d. in or after 1692), Roman Catholic archbishop of Cashel, IE (b. 1625) |
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| john brenan (1690-1761) (b. 1690) |
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| nicholas brenan (1724-1799) (b. 1724) |
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| gerald brenan (1765-1836) (b. 1765) |
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| john brenan Irish physician (b. 1768) |
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| michael john brenan Irish Catholic priest and Capuchin (b. 1780) |
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| alexander brenan British Royal Navy officer, lieutenant in 1814 (1790-?) (b. 1790) |
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byron brenan British diplomat, FR (b. 1847) |
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| ryan brenan Australian politician, magistrate and coroner, IE (b. 1798) |
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| john gerald brenan (1800-1860) (b. 1800) |
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| pierce brenan (1810-1832) (b. 1810) |
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| nicholas brenan (1811-1871) (b. 1811) |
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| james butler brenan Irish painter (1825-1889), IE (b. 1825) |
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| joseph brenan Irish writer (1828-1857) (b. 1828) |
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john brenan British diplomat (1883-1953), GB (b. 1883) |
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