Bray / de Bre. Cornwall toponymic origins. They were in Co. Wicklow in the south - east of Southern Leinster. Also now known as Bree.

Bray - Irish / Ua Breaghdha (of Bregia / Brega.) A Sept / Family branch, who had their territory in Co. Meath in the south - east of Northern Leinster, who were later also in the Munster Province.

Braybrook -

O Brazil or O Brassill - Irish / Ua Breasail - bres / strife. A Sept / Family branch, who had their territory in Co. Waterford in the south - east of the Munster Province.

Bready. Used as a variant for Brady in the Connacht Province and the Ulster Province.

Breakey. They have been in Co. Monaghan and the surrounding region in Southern Ulster since the late 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 Plantations there in there Ulster Province. Brakey was also used as a variant.

Mac Brearty or Mac Murty - Irish / Mheic Muircheartaigh (Descended from a son of Murtough / Muirchertach) A Sept / Family branch, who had their territory in Co. Donegal in the north - west of the Ulster Province. Mac Murty and Mac Murtry used in Co. Antrim in the north - east of Ulster. No connection to Mac Murtrie, which was a Sept of the Scottish Clan Stuart of Bute.

Bredin or Breadon or Braden. Used as variants for the Irish / Ua Bradain in Co. Tyrone and Co. Fermanagh in the south - west of the Ulster Province. Bradden also used as a variant in Co. Leitrim in Northern Connacht.

Breadon. Anglo - Norman toponymic origins. They were in the Leinster Province.

O Bree. A Sept / Family branch, who had their territory in Co. Kilkenny / Ossory in the south - west of Southern Leinster.

Bree. Used in Co. Sligo and Co. Mayo in the west of the Connacht Province. See Bray.

O Breen or O Brien or O Bruen - Irish / Ua Braoin. A Sept / Family branch, who had their territory in Co. Offaly in the north - west of Southern Leinster and nearby in Co. Westmeath in the south - west of Northern Leinster on the nearby border with Co. Roscommon in the east of the Connacht Province. They were the Kings and Chiefs of Brawney. Also anglicized as O Bruen in Co. Roscommon.

O Breen. They were in Co. Tyrone in Central Southern Ulster.

O Breen - Irish / Ua Briain. A Sept / Family branch, who had their territory in Co. Wexford in the south - east of Southern Leinster.

Mac Breen - Irish / Mheic Braoin - braon (moisture drop). A Sept / Family branch, who had their territory in Co. Kilkenny / Ossory in the south - west of Southern Leinster where they where Chiefs. They were later driven out of their territory there by the Anglo Normans into nearby Co. Wexford in the south - east of Southern Leinster (The name is now indistinguishable from O Breen) Dan Breen who was very active in the Irish Volunteers during the 1921 Anglo - Irish War is buried in the ancient church just across the road on a hill opposite to Donohill / Dun Eochaille (The Fort of the Yew Wood) in Co. Tipperary in the north - east of Ormond / North Eastern Munster. See also - Mac Bryan.

Mac Breen / Mheic Braoin, A Heremonian Ui Cobhthaigh Dal Cuinn Colla da Crioch Siol Daim Argait (Ui Cremthainn) Clann Lugainn Sept / Family branch, who had their territory in Co. Fermanagh in the south - west of the Ulster Province. They were kinsmen to the Maguires / Mac Guires, Mac Alear / Mac Eleer / Mheic Gilla Uidhir, Mac Aleese / Mac Gileece / Mac Leece / Mac Illeese / Mac Leese / Mac Lice / Mac Lise etc / Mheic Giolla Iosa, Mac Anally / Mac Cowley / Mac Culloo / Mheic Con Uladh, Mac Auley / Mac Awley / Mac Gawley / Mheic Amhlaoibh. Mac Caffery / Mac Godfrey / Mheic Gafraidh, Mac Cassidy / Mheic Asidha, Mac Court / Mac Courtney / Mheic Cuairt, Mac Cormack / Mheic Cormaic, Mac Corry / Mac Gorry / Mac Godfrey / Mac Gohery / Mac Goffrey / Mheic Gothraidh, O Darragh / O Darra / O Darrough / Oaks / Ui Dubhdhara, Mac Gee / Magee / Mheic Aodh, O Heany / O Heeny / O Hegney / O Higny / Bird / Ui hEgneach, Mac Lilly / Mac Calilly / Mac Lely / Mac Lillie / Mac Alilly / Mac Alyly / Mheic Ailghile, Mac Loughlin / Mac Lachlan / Mheic Lochlainn, Mac Manus / Mheic Maghnuis, Mac Morrow / Mac Murrow / Mheic Murchada (Clann Aodh). Ancestors: *98.Lugan, *97.Irgalach, *96.Eignigh, *95.Cormac, *94.Fergus, *93.Aed, *92.Cormac, *91.Cairpre "Daim Argait," *90.Eochy / Echach, *89.Criffan / Crimthann "Leith" / "Lethan," *88.Feicc, *87.Dega "Duirn," *86.Rochatha / Rochadh, *85.Murray / Muiredach "Colla da Crioch" / "Focrith" - of the Two Countries, *84.Eochy / Echu "Doimhlen," *83.Cairbre "Liffeachair" the 116th King of Tara / Ireland.

O or Mac Breheny or Judge - Irish / Mheic or Ua Bhreitheamhnaigh (Descended from the judge) A Sept / Family branch, who had their territory in Co. Sligo in the north - west of the Connacht Province and nearby in the north of Co. Roscommon in the east of Connacht.

O Brennan. A Sept / Family branch, who had their territory in the east of Co. Galway in Southern Connacht,

O Brennan. A Heberian Dal gCais Ui Bloid Sept / Family branch, who had their original territory in Thomond / Northern Munster descended from *93.Brennan / Breanainn "Bran" the direct ancestor of the Muinter Urthaile, the Muinter Maol Domhnaigh and the Muinter Chearnaigh, which were to also produce the Families of the O Glinns / O Glynns, O Hurleys, O Maglins, O Maegans, O Maloneys and O Muldowneys / Downeys. Ancestors: *93.Brendan "Bran," *92.Blood / Blod (Ui Bloid), *91.Cas (Dal gCais) the King of Thomond.

O Brennan. A Sept / Family branch, who had their territory in Co. Kerry / Iar Mhumhain in the south - west of Desmond / Des Mhumhain / Southern Munster.

O Brennan. A Sept / Family branch, who had their territory in Co. Westmeath in the south - west of Northern Leinster. 

O Brennan - Irish / Ua Braonain. A Heremonian Ui Laoghaire Ui Connla Sept / Family branch, who had their territory in the north of Co. Kilkenny / Ossory in the south - west of Southern Leinster were they were the Chiefs and Kings of the Cantred of Idough. They lost their territory their after the Anglo - Norman Invasion in the late 12th Century AD. Ancestors: *78.Connla (Ui Connla), *60.Laoghaire the 68th King of Tara / Erinn (Ui Laoghaire), *37.Heremon (Heremonians.)

O Brennan or O Brannan - Irish / Ua Branain. An Erenagh Sept / Family branch, who had their territory in Co. Fermanagh and Co. Monaghan in Southern Ulster. The English cleared them out of Cloneagh in Co. Laois in the mid - west of Southern Leinster twice in 1585 AD.

Mac Brennan - Irish / Mheic Branain. A Sept / Family branch,\ who had their territory in the east of Co. Roscommon in the east of the Connacht Province were they were Chiefs of Corca Achlan Tuath / Family region.

 Brenne -

O Brennigan. Used as a variant for O Branigan, which see, who were in the west of the Connacht Province.