Brennan Name History

Brennan Irish Coat of Arms

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Brennan is an Irish surname which is an Anglicised form of two different Irish language surnames —Ó Braonáin and Ó Branáin.

The Gaelic surname Ó Braonáin, means "descendant of Braonán." The personal name Braonán is derived from a word which means "moisture," "drop." The Gaelic surname Ó Branáin, means "descendant of Branán." The personal name Branán means "little raven." Brennan is also a given name. Variant spellings of the Irish surname Brennan: Brannon, Brannan, Brannen Brannin, Brennyn, Brannyn, Brenan, Branen, Branon, Brenon, and many more.

Legends of the Brennan family in Ireland

Legend has it that the Brennans were a wealthy family for years in Leinster, but they lost their fortune in the 1600s and became highwaymen.The famous Irish song, "Brennan on the Moor," was inspired by the Robin Hood-like legend of the Brennans.

Learn more about the Brennans

The Framed Irish Family Name History, (#1760) has more information on the Brennan surname. There is a wide selection of Brennan coat of arms products at The Irish Rose. Please visit the Irish Coat of Arms page.

Find a Brennan Pub in Ireland

Don't miss taking a selfie in front of Brennan's Kilteel Inn, in Kilteel, County Clare, southwest of Dublin. 

If you can't make it there in person, our personalized pub gifts are the next best thing!

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