As you can see Im a Breen living In Dublin Ireland where I am a civil servant. Im originaly from Cork but my Dad Gerard is from Waterford. His father Joseph Breen was from Kerry where there is alot of Breens , there are also a number to be found in County Wexford where the name is thought to originate from. The name comes from the Gaelic word "Bron" which means sorrow, and the Breen moto is believed to be "Fight for right".
I hope this has been of some help.