Surname Tiernan (Tiernan 
, Tighearnán, تينان 
) , across the world, is quite a common family name. The cognomen Tiernan is characteristic of Ireland, where it is quite a common surname, Australia, where it is quite a rare surname, and the United Kingdom. Measured by absolute frequency, it most frequently occurs in the United States, Ireland, and the United Kingdom. Much less frequently, Tiernan is the forename as well as the last name.
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luke tiernan (1757-1839) (b. 1757) |
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nancy ann owen tiernan President of the Baltimore Orphan Asylum (b. 1776) |
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mary spear nicholas tiernan American writer, US (b. 1835) |
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frances tiernan American writer, US (b. 1846) |
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| charles b. tiernan merchant 1797-1886 (b. 1797) |
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mike tiernan American baseball player, US (b. 1867) |
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robert tiernan American politician (1929-2014), US (b. 1929) |
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| kip tiernan social activist (b. 1926) |
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| patricia tiernan American actress, US (b. 1930) |
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charles b. tiernan |
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| joe tiernan Australian politician, AU (b. 1942) |
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patrick tiernan Australian runner, AU (b. 1994) |
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| helen tiernan Australian artist of Aboriginal and Irish heritage, AU (b. 1952) |
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| cate tiernan American novelist, US (b. 1961) |
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| greg tiernan Irish-Canadian animator and director, IE (b. 1965) |
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