Brennan Name Origin

/BREN-an/

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Name Details

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Name Origin

The name Brennan is of Irish origin, derived from the Gaelic Ó Braonáin, meaning 'descendant of Braonán'. It is common in Irish and Irish-descended communities, and has been adopted in English-speaking countries.

This chart shows how many babies were given the name Brennan each year, based on data from the U.S. Government's Social Security Administration (SSA).

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