Around the world, Tarlach (Tarlach 
) is a very rare boy's first name. The first name Tarlach is characteristic of Northern Europe, particularly Ireland, where it is a rare masculine name. Likewise, Tarlach is the last name as well as the forename.
| tarlach mac suibhne Irish piper, IE (b. 1831) |
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| tarlach ó raifeartaigh Irish scholar (1905–1984) (b. 1905) |
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| tarlach ó huid Irish writer, GB (b. 1917) |
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| tarlach macniallais gay and disability rights activist (1962-2020), US (b. 1962) |
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| tarlach rua mac donaill Irish poet |
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| tarlach ó mealláin Irish writer |
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| tarlach mcgonagle |
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