The Barretts then migrated to Ireland with the Norman warlord Strongbow (Richard Le Clare, the 2nd Earl of Pembroke) as hired mercenaries at the end of the twelfth century in the Norman Invasion of Ireland.
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The Barrett clan descended from the Normans, and trace their ancestry to a John Baret, mentioned in the Domesday book, who settled in Pendyne in Wales after the Norman Conquest.
Wu-Tang Clan | Syd Barrett | Elizabeth Barrett Browning | clan | Tokugawa clan | Barrett Watten | Shimazu clan | Clan Mackay | Barrett | Taira clan | Clan Cameron | Minamoto clan | Scottish clan chief | Scottish clan | Clan Sweeney | William Barrett | Satake clan | Oda clan | Majel Barrett | Hōjō clan | Fujiwara clan | Dave Barrett | Clan Ross | Clan Murray | Barrett-Jackson | Asakura clan | Uesugi clan | Mōri clan | Clan Donald | Clan |
Most prominent of the Norman families in the area were the FitzGeralds (Earls of Desmond), FitzMaurices, Barrys, Barretts, and Roches.