Dowdall / Dubhdal / or Doudall (from Dovedale) Danish origins. They were in Co. Meath and nearby in Co. Louth in the east of Northern Leinster and in "The English Pale" in Co. Dublin in the north - east of Southern Leinster since the Anglo - Norman Invasion in the 12th Century AD. See also - Dudley.

O Dowdican or O Dudican - Irish / Ua Dubhdacain. A Sept / Family branch, who had their territory in Co. Sligo in the north - west of the Connacht Province and to the north of there in Co. Donegal in the north - west of the Ulster Province. It is also cognate with O Dowd.

Dowdie or Dowds. Used in the Ulster Province for O Dowd, which see.

Mac Dowell. Highland Scottish origins. Gaelic Irish / Mheic Dubhghaill / dubh - black / gall - foreigner. Changed from Doyle. Their motto was Bhi me beich me (I was and I will be) An Irish variant of the Scottish Norse Sept of Mac Dugall. They arrived into Ireland from the Hebrides as galloglass / mercenaries and settled into Co. Roscommon in the east of the Connacht Province around Lismacdowell and now also found in the north of the Ulster Province from more recent immigration.

O Dowey. Used as a synonym for O Duffy, which see, in the Ulster Province.

O Dowlane. A Sept / Family branch, who had their territory in Co. Down in the south - east of the Ulster Province in the 16th Century AD. Used also for O Dowling, which see, in Co. Carlow in Southern Leinster, and O Doolan, which see, in Co. Longford in the north - west of Northern Leinster.

O Dowler. Used as a variant in the north of the Connacht Province for O Dollagher, which see.

O Dowling or O Dowlinge or O Dolan or O Doolan - Irish / Ua Dunlaing. An Irian Laeghis / Ui Laoighis Sept / Family branch of the O More / Moore / Ui Morda / Mordha Sept whose territory was in Co. Laois in the mid - west of Southern Leinster. They were one of "7 Septs of Leix / Co. Laois" who still existed along with the O Deevys, the O Dorans, the Mac Evoys, the O Kellys, and the O Lalors and O Mores after the Anglo - Norman Invasion in the 12th Century AD. Their initial alliance began after the 3rd Century AD when the ancestor of the 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 the leader of the Red Branch Warriors of Ulster, who was a contemporary of Cuchulainn (Co. Laois is named for *69.Laoighseach as he assisted *84.Cu "Corb" the initial ancestor of the Heremonian Ui Laoghaire Cu Corb Kings of Leinster to drive the men of Munster Province out  of what was then part of Mogha's Half. They became the sub - Kings there and they held together all through the six ethnic - religious rebellions under Elizabeth 1st the English Queen until they were dispersed and relocated elsewhere by the English. (Their actual territory was in the west of Co. Laois on the River Barrow in "O Dowlings’ Country" / Fearrann Ua nDunlaing.)  In 1609 AD one of their leading Septs was transplanted to Tarbert in Co. Kerry in the south - west of Desmond / Southern Munster by the English along with the other Irish leaders from the "7 Septs of Co. Laois." They were also Chiefs in Co. Wicklow in the south - east of Southern Leinster. Kinsmen also to O Brophy / O Brofie / Ui Broithe, O Cashin / O Kissane / Ui Casain, O Deegan / Ui Duibhgainn, O Doran / O Dorran / O Dorrian / O Durran / O Durrian / Ui Deoradhain, 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 of Laois, O Lalor / O Lawlor / Ui Leathlobhair, Mac Lee / Mac Lea / Ui Laoidhigh, O Swords / O Sord / O Sourdes / O Suard / Ui Suaird. 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, *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 (Irians). See also - O Doolan.

Downes - Irish / Ua Dubhain. Used in Co. Clare and Co. Limerick in the north - west of Thomond / Northern Munster. See also Dwane.

O Downey - Irish / Ua Dunadhaigh - dun / fort. A Heremonian Ui Cobhthaigh Dal Cuinn Ui Maine Sept / Family branch, who had their territory in Co. Galway in Southern Connacht where they were the Chiefs of the Siol Anmchadha Sept. 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 Downey - Irish / Ua Dunadhaigh / Ua Dun Ao Oig. A Sept / Family branch, who had their territory on the Co. Cork and Co. Kerry border in Desmond / Des Mhumhain / Southern Munster at Luachair. Often changed to O Downing, which see. See also - O Moloney.

O Downing - Irish / Ua Dinan. A Sept / Family branch, who had their territory in Co. Limerick in the mid - north - west  of Thomond / Tuaiscert Mhumhain / Northern Munster where they were the Chiefs of Uaithne / Barony of Owen Beg.

Downing. English name utilized by the Irish O Dinneens / Ui Duinnin. A Sept / Family branch, who had their territory in Co. Kerry in the south - west of Desmond / Des Mhumhain / Southern Munster. Also see Downey.

Dowse / douse / sweet. French origins. They have been in Co. Dublin in the north - east of Southern Leinster and surrounding Counties since the early 14th Century AD.

O Doyle - Irish / Ua Dubhghaill - dubh gall / dark foreigner. Dane Norse origins. They were well established before the Anglo - Norman Invasion in the 12th Century AD in Co. Carlow in Southern Leinster and especially nearby in Co. Wexford in the south - east of Southern Leinster and Co. Kilkenny in the south - west of Southern Leinster. They were also Chiefs nearby in Co. Wicklow in the south - east of Southern Leinster.

O Doyle. Used as a synonym for Mac Dowell, which see, in Co. Roscommon in the east of the Connacht Province and they were also nearby in Co. Galway in Southern Connacht.

O Doyne. Originally O Dunne. A Sept / Family branch, who had their territory in Co. Carlow in Southern Leinster.

                                                                                      +On to Dracot - O Droghan