O Dinerty - Dixon
O Dinerty. A Sept / Family branch, who had their territory in
Co. Tipperary in the north - east of Aur Mhumhain / Ormond / Eastern Munster.
O Dingevan or O Dinnevan - Irish / Ua Dinneabhain. A Sept / Family branch, who had their territory in Des Mhumhain / Desmond / Southern Munster. Some also changed to O Donovan. See also Ginnevan.
O Dinkin - Irish / Ua Duinnchinn (brown head). A Sept / Family branch, who had their territory in the north of the Connacht Province. Many also changed to Duncan.
O Dinneen or O Dinan - Irish / Ua Duinnin / donn (brown). A Sept / Family branch of poets and historians, who had their territory in Co. Cork in Des Mhumhain / Desmond / Southern Munster.
O Dinnegan - Irish / Ua Duinngain. Used as a variant for Donegan, which see, in Co. Longford in the north - west of Northern Leinster.
Dinsmore. Scottish origins. Used as a variant for the Fifeshire toponymic Dunsmore in
Co. Derry and Co. Donegal in Northern Ulster.
O Diocholla. Gaelic Milesian Irian Sept / Family branch, who had their territory in
the west of Co. Clare in the north - west of Tuaiscert Mhumhain / Thomond / Northern Munster where they were the Chiefs of Corcomroe with the O Mullethys / O Multhys. Ancestor: 37.Ir (Irians).Mac Diraghty -
O Dirrane or O Derrane - Irish / Ua Dearain. A Sept / Family branch, who had their territory in Co. Galway in Southern Connacht.
O Dirreen -
Irish / Ua Dirin. A Sept / Family branch, who had their territory in Co. Kilkenny in the south - west of Southern Leinster.
O Diskin -
Irish / Ua Discin - diosc / barren. A Sept / Family branch, who had their territory at Ballydiscin in Co. Sligo in the north - west of the Connacht Province and now also in the south of Connacht.
Disney / de Isigney. French origins in the south of
Ireland and Northern Leinster since the early 17th Century AD.
Divane. See Dwane.
Diver or Dever. Heremonian Dal Cuinn Colla Da Crioch Sept / Family branch
Mac Diver - Irish / Ua Duibhidir. Heremonian Ui Cobhthaigh Ui Felim Dal Cuinn "northern" Ui Niaill Cenel Conaill Sept, who had their territory in Tir Conaill / Tyrconnell / Co. Donegal (The Land of 91.Conall) in the north - west of the Ulster Province. Some changed to Mac Deere. while Mac Dever was also used in Co. Mayo in the mid - west of the Connacht Province. See also Mac Dyer. Ancestors: 91.Conall Gulban the 1st King of Tir Conaill / Tyrconnell / Co. Donegal (Cenel Conaill), *90.Niall of the Nine Hostages the 126th King of Tara / Ireland (Ui Niaill).
O Divilly. See Devilly.
O Divine or O Diveen - Irish / Ua Duibhin. A Sept / Family branch, who had their territory in Co. Derry in the north - east of the Ulster Province, and Co. Tyrone in Central Ulster. Elsewhere indistinguishable from Devine.
O Diveney or O Divenny - Irish / Ua Duibheanaigh - dubh (black) eanach. A Sept / Family branch, who had their territory in Co. Mayo in the mid - west of the Connacht Province. Cognate also with Devanny.
Dix. Irish origins in France known there as de Aix.
Di. Used as a variant for Dick, which see in Co. Dublin in the north - east of Southern Leinster since the Mid - 17th Century AD.
Dixon. See Dickson.