Anglicisation of the Irish surname Ó Briain, meaning “descendant of Brian”.
"o-brien." YourDictionary, n.d. Web. 23 October 2018. <https://www.yourdictionary.com/o-brien>.
o-brien. (n.d.). Retrieved October 23rd, 2018, from https://www.yourdictionary.com/o-brien
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