I'm the moderator for a Facebook page entitled The Bralley's: An Irish-American Family. My ancestors were from Ulster and came to America early in the 18th century; SE Pennsylvania, then down to SW Virginia and North Carolina. Many of the surname and its variants from PA, VA, MO, NC, SC and WV all originate from the Ulster clan and this has been verified by Vern Braly's Y-DNA testing. Check out The Bralley's: An Irish-American Family for lots of material on all variations of the Irish surname O Brolaigh. Thanks!