O Breslin or O Breslane - Irish / Ua Breislain / Ua Breislein. A Heremonian Ui Cobhthaigh Dal Cuinn "Northern" Ui Niaill Cenel Enda Sept / Family branch, who had their territory originally in Co. Donegal in the north - west of the Ulster Province. They were the Chiefs of Fanad, and also important Brehon lawyers in Co. Fermanagh in the south - west of Ulster and nearby in Co. Sligo in the north - west of the Connacht Province. They were also Chiefs in Co. Tipperary in the north - east of Ormond / North Eastern Munster. Ancestors:*88.Enda (Ui Endae), *87.Niall of the Nine Hostages the 126th King of Tara / Ireland (Ui Niall.)

O Bresnahan or Bresnan See - Brosnan.

O Bressil (West.) A Heremonian Ui Cobhthaigh Dal Cuinn Colla da Crioch Sept / Family branch. Ancestors: *85.Murray / Muiredach "Colla da Crioch" / "Focrith" - of the Two Countries, *84.Eochy / Echu "Doimhlen," *83.Cairbre "Liffeachair" the 116th King of Tara / Ireland.

Brett or Britt / Le Bret. Breton French origins. They have been in Ireland since the 12th Century AD, and are now in Co. Tipperary and Co. Waterford in the east of the Munster Province, and in Co. Sligo in the north - west of the Connacht Province.

Brew - Irish / Ua Brugha - broe / farmer. A Sept / Family branch, who had their territory in the Heremonian Ui Laoghaire Ui Connla kingdom of Ossory in Co. Kilkenny in the south - west of Southern Leinster.

Brew. Manx origins. Mheic Vriew.

O Brian. A Sept / Family branch, who had their territory near Athlone in Co. Westmeath in the south - west of Northern Leinster, and nearby in Co. Offaly in the north - west of Southern Leinster, and were Chiefs of Brawney.

Mac Briar. Highland Scottish origins. Used as a variant for Mac Brair - brathair / brother / friar. They were in Co. Down in the south - east of the Ulster Province.

O Brick - Irish / Ua Bric. An important Sept / Family branch, of the Decies, who were Kings and Chiefs, who had their territory in Co. Waterford in the south - east of the Munster Province.

O Brick - Irish / Ua Bruic. A Sept / Family branch, who had their territory in Co. Kerry in the south - west of Desmond / Des Mhumhain / Southern Munster, who were originally from Thomond / Tuaiscert Mhumhain / Northern Munster. Changed to Badger in Co. Galway in Southern Connacht.

Brickley or Breckley. May be a variant of Berkeley, which see, who were in Co. Cork in Desmond / Southern Munster in the 13th Century AD.

Mac Bride or Mac Gilbride or Mac Kilbride or Mucklebreed - Irish / Mheic Giolla Bhrighde Descended from a son of the devotee of St. Bridget) They were an important Heremonian Ui Cobhthaigh Dal Cuinn "Northern" Ui Niaill Cenel Conaill Arda Midhair Ecclesiastical Sept / Family branch, who had their territory at Raymunsterdoney in Co. Donegal in the north - west of the Ulster Province, and then in Co. Down in the south - east of Ulster. Kinsmen to the O Dohertys / Ui Dochartaigh. Also see Kilbride. Ancestors: 91.Lugdach, 90.Setnai, 89.Fergus, 88.Conall "Gulban" (Cenel Conaill) the 1st King of Tyrconnell, 87.Niall of the Nine Hostages the 126th King of Tara / Ireland (Ui Niaill.)

Mac Bride. Scottish Highland origins. They were in the east of the Ulster Province.

Bridgeman. English origins. They came from Gloucestershire in the 17th Century AD, and were in Co. Cork in Desmond / Southern Munster. See also - Drought.

Bridget. Actually the Uprichards, which see, who have been in Ireland since the 17th Century AD after the Confiscation of the 3,500,000 acres of the Heremonian Ui Cobhthaigh Dal Cuinn Ui Niaill territories there, and the Foreign non - Catholic Plantation of Ulster Province, and are now still mainly found in Ulster.