O Doorley - Irish / Ua Dubhurthuille - Dubhurla. A Heremonian Ui Cobhthaigh Dal Cuinn Ui Maine Sept / Family branch, who had their territory in Co. Galway in Southern Connacht. Ancestors -*86.Maine "Mor"(Ui Maine), *85.Murray / Muiredach "Tireach" the 122nd King of Tara / Ireland, *80.Conn of the Hundred Battles the 110th King of Tara / Ireland (Dal Cuinn).

O Doorley - Irish / Ua Dubhurthuille - Dubhurla. An Ithian Corca Laoidhe Sept / Family branch, who had their territory in Co. Offaly in the north - west of Southern Leinster. Ancestors - *36.Lewy / Lughaidh, *35.Ith (Ithians).

O Doran or O Dorran or O Dorrian or O Durran or O Durrian - Irish / Ui Deoradhain. Ua Deorain now used - deoradh / exile or pilgrim. An Irian Laeghis / Ui Laoighis Sept / Family branch of the O More / O Moore / Ui Mordha Sept, who were Irish Brehon Law judges and lawyers and kinsmen to O Brophy / O Brofie / Ui Broithe, O Cashin / O Kissane / Ui Casain, O Deegan / Ui Duibhgainn, O Dowling / Ui Dunlaing, Mac Gahan / Mac Geehan / Mageehan / Mheic Gaethain, Mac Keady / Mac Keadie / Mac Keddy / Mac Keedie / Mac Keedy / Mackeady / Mheic Ceadach, O Harrigan / O Harraghan / O Harahan / Ui hArraghain, Ui Liathain, O Lalor / O Lawlor / Ui Leathlobhair, Mac Lee / Mac Lea / Ui Laoidhigh, O Swords / O Sord / O Sourdes / O Suard / Ui Suaird who had their territory in Co. Laois in the mid - north - west of Southern Leinster. They were one of the "7 Septs of Leix / Co. Laois" they existed along with the O Deevys, the Mac Evoys and the O Kellys after the Anglo - Norman Invasion in the 12th Century AD. Their original alliance had begun there previously after the 3rd Century AD when the ancestor of the Irian O Mores came into Co. Laois from the Ulster  Province led by *69.Laoighseach "Cean Mor," a son of 68.Conall "Cearnach"- of the Victories from the Ulster Red Branch Warriors who was a contemporary of Cuchulainn. (Co. Laois is named after *69Laoighseach who assisted *84.Cu "Corb," the initial Heremonian Ui Laoghaire Ui Lughaidh ancestor of the Cu Corb Kings of Leinster, to drive the men of Munster Province out of the territory there in Mogha's Half. The O Dorans became the sub - Kings there and the 7 Septs held together all through the 6 ethnic and religious rebellions later under Elizabeth 1st of England until they were finally dispersed by the English and relocated elsewhere. Ancestors - *Fachtna, *Milige, *Bran, *Eircc "hUbulchind," *Felim / Feidlimid mheic Finnchad, *78.Fiachach "Uanchind," *77.Daire, 76.Rossa, *75.Ogomain, *74.Fergus, *73.Muleist, *72.Fachtna, *71.Milige (Ui Baccan), *70.Intait, *69.Lugdach "Loichsi" / Laoiseach "Ceann Mor" the ancestor of the O More / Moore / Siol Morda Sept in the north - west of Southern Leinster ,*68.Conall "Cernach" - of the Victories the leader of the Knights of the Red Branch of Ulster who is also the direct ancestor of the Mac Guinness, Mac Gowan and many other Irian Families in the Ulster Province and the Connacht Province, *67.Aimhirgin "Larghiunach," *66.Cas, *65.Fachtna, *64.Cathbladh, *63.Cionga,  *62.Rory / Ruaidri “Mor” - the Greater who died in 218 BC as the Irian 86th King of Tara / Erinn the direct ancestor of all of the Irian Families from the Clann - na - Rory Sept descended from *37.Ir.

O Dorcey or O Dorcy or O Darcy - Irish / Ua Dorchaidhe - dorca / dark. A Sept / Family branch, who had their territory in Co. Mayo and Co. Galway in the mid - west of the Connacht Province. (One of the "Tribes of Galway.)" See - O Darcy.