Berrill or Birrell / Boireil. Anglo Norman origins. They have been in Ireland since the Anglo - Norman Invasion in the 12th Century AD in Co. Louth in the north - east of Northern Leinster.

Berry. English origins. Used as a variant for Bury, which see, in Ireland since the 17th Century AD. Used also as a synonym for Beary, which see, in Co. Offaly in the north - west of Southern Leinster.

Best / beast (in charge of cattle.) English origins. They came from Kent and were in the Leinster Province in the 17th Century AD, especially in Co. Carlow in Southern Leinster and the surrounding regions.

Best. English origins. Recent arrivals they were in Co. Antrim, Co. Armagh and Co. Tyrone in the Ulster Province.

Beston. English toponymic origins. They have been in Co. Limerick and in the east of Co. Clare in the north - west of Thomond / Northern Munster since the 16th Century AD. 

Mac Betagh - Irish / Mheic Biataigh. A Sept / Family branch, who had their territory in Co. Meath in the south - east of Northern Leinster. See also - Beatty.

Betah - Betahe

Mac Beth or Mac Beath. Scottish Highland origins. Gaelic Irish / Mheic Beatha - beatha / life. Often confused with Mac Veagh and Mac Evoy, which see, in the Ulster Province.

Bethel or Bethell / ap Ithel. Welsh origins. They have been in the Ulster Province since the Mid - 17th Century AD after the Confiscation of the 3,500,000 acres of the Heremonian Ui Cobhthaigh Dal Cuinn "Northern" Ui Niaill territories there, and the Foreign non - Catholic Plantations there.

Betty. Used as a variant for Beatty, which see, and both were also used as synonyms for Mac Caffrey, which see, in Co. Fermanagh in the south - west of the Ulster Province.

Bhaird - Irish / Mheic an Ward (Descended from a son of the Bard) -

O Biggane or O Biggins - Irish / Ua Beagain / Ua Bigin - beag / little. A Sept / Family branch, who had their territory in the Munster Province, who are now known as Little and Littleton. Also known as Beggane in Co. Monaghan in Southern Ulster and Biggins in Co. Mayo in the mid - west of the Connacht Province.

O Biggy - Irish / Ua Bigigh - beag / small. A Sept / Family branch, who had their territory in Co. Mayo in the mid - west of the Connacht Province.

O Biglan or O Biglane. An Irian Conmaicne Rein Muinter Eolais Tellach Cearbhallan Sept / Family branch, who had their territory at Mohill and Leitrim in Co. Leitrim in Northern Connacht. Especially see - O Beglin.

Binchy. English origins. They came into Ireland in the Mid - 17th Century AD and were at Charleville and the surrounding region in the north of Co. Cork in Desmond / Southern Munster.

Bingham. English toponymic origins. They were originally in Co. Mayo in the mid - west of the Connacht Province where is Binghamstown, but are now to be found in the Ulster Province.

Birch. Locative name. They were in Co. Offaly in the north - west of Southern Leinster in the Mid - 17th Century AD.

Bird - Irish / Mheic an Deaghanaigh (Descended from a son of the Dean) Anglicized incorrectly from ean / bird - by the Heremonian Ui Cobhthaigh Dal Cuinn Colla da Crioch Irish Sept of the O Heanys, (38 variations) which see especially.  

De Birmingham. Anglo Norman origins (Descended from Piers de Bermingham) Gaelicized to Mac Fheorais (Descended from a son of Piers) and also anglicized to Corish. They were in Co. Louth in the north - east of Northern Leinster. English Barons in Co. Galway in Southern Connacht.English Barons in Co. Kildare in Central Southern Leinster. Especially see also - Bermingham.