Celtic Meaning: The name Brianna is a Celtic baby name. In Celtic the meaning of the name Brianna is: Strong. She ascends. Feminine of Brian.
This interesting surname is the Anglicized form of the Gaelic-Irish name "O'Braion", descendant of "Braon", a byname meaning "moisture", "drop". At the present time, the name Breen is widely distributed throughout Ireland. Originally there were two septs of Breen, Mac Breens and O' Breens.
