O Dwane - Dyra 

O Dwane or O Devane or O Divane or O Downes - Irish / Ua Dubhain. Gaelic Ithian Corca Laoidhe Sept / Family branch, who had their territory in Co. Cork in the south - west of the Munster Province. O Divane was also used in Co. Kerry in the south - west of Des Mhumhain / Desmond / Southern Munster and O Downes used in Northern Munster. Ancestors: 36.Lewy / Lughaidh, 35.Ith (Ithians).

O Dwane or O Duane or O Devane - Irish / Ua Dubhain. A Sept / Family branch, who had their territory in Southern Connacht.

O Dwyane or O Devane or O Duane - Irish / Ua Diubhain. A Sept / Family branch, who had their territory at Knowth in Co. Meath in the south - east of Northern Leinster.

O Dwayne or O Devane or O Duane - Irish / Ua Diubhain. Gaelic Ithian Corca Laoidhe Sept / Family branch, who had their territory in Co. Cork in Des Mhumhain / Desmond / Southern Munster. Ancestors: 36.Lewy / Lughaidh, 35.Ith (Ithians).

O Dwyer of Co. Tipperary. Irish / Ua Duibhir / Ua Dubhuidhir - dubh odhar (sallow, dark or dun - coloured). Important Heremonian Ui Laoghaire Ui Lughaidh Cu Corb Sept / Family branch, whose territory was originally in the west at Kilmananagh in mid - Co. Tipperary in the north - east of Aur Mhumhain / Ormond / North Eastern Munster and later in Southern Leinster and were kindred to the O Carberys and O Lees. The O Dwyers were Kings and stood out in the resistance to the English ethnic and religious oppression and survived as an aristocratic Irish Family Sept until modern times. Michael Dwyer was involved in the United Irishmen Societies' rising in 1798 AD and continued on with the resistance until 1803 AD when he was transported to Australia where he became the High Constable in Sydney. Their Castle was Ballysheeda at Kilmananagh where it is also known as the Cappagh White Castle. Donohill / Dun Eochaille (The Fort of the Yew Wood) in Co. Tipperary was the previous territory of the O Dwyers and their Motte is still there, but their fort is gone. Ancestors: 107.Padraic O Dwyer the King of Kilnamanagh in Co. Tipperary,106.Nial, 105.Cathalan,104.Caolbadh, 103.Dubhir direct ancestor of the Ui Duibhir Sept,102.Spellan, 101.Suibhneach, 100.Donnocha, 99.Dubhdahna, 98.Greallan, 97.Luchair, 96.Luighneach, 95.Macrimhe, 94.Finnchadh, 93.Ferruith, 92.Inneach, 91.Ferniadh, 90.Lewy / Lughaidh, 89,Buan ancestor of the Ui Buain Sept, 88.Argetmar, 87.Cairbre / Cairpre Cluitheachar ancestor of the Ui Cairbre Sept youngest son of 86.Cu Corb went into the Munster Province where his maternal grandfather Conaire Mor the 97th King of Ireland gave him territory there that became the kingdom of Dal Cairbre, (People of 87.Cairbre), 78.Lewy / Lughaidh ancestor of the Ui Lughaidh Sept, *60.Leary / Laoghaire the 69th King of Tara / Erinn.

O Dwyer of Coille na Managh - Irish / Ua Duibhir. Heremonian Ui Laoghaire Ui Lughaidh Cu Corb Sept / Family branch descended from 97.Greallan a brother of 97.Luchair above, 98.Cruithine / Ruadhin ancestor of the Ui Ruadhin Sept, 99.Fhuradhan, 100.Conaire, 101.Dubh Da Tuath, 102.Dunchadh, 103.Suibhneach, 104.Spealan, 105.Dubhodhar ancestor of the Ui Duibhir Sept, 106.Donnchad, 107.Aodh, 108.Lorcan, 109.Ceallach, 110.Lorcan, 111.Giolla na Naomh, 112.Lochlann, 113.Giolananaomh, 114.Pilip Donn, 115.Tomhas, 116.Luighaidh, 117.Tomhas / Conchobar, 118.Conor, 119.Tomhas, 120.Diarmaid, 121.Uaithne, 122.Pilip, 123.Dermod O Dwyer.

O Dwyer or O Dewar - Irish / Ua Duibhir / Ua Dubhuidhir - dubh odhar (sallow, dark or dun - coloured). Heremonian Dal Cuinn Colla Da Crioch Sept / Family branch who had their territory in the Ulster Province where they were kinsmen to the Ui Maoloidhe Sept and Cumascach the King of Orghialla. Ancestors:95.Ferach the eighth son of 95.Daimhin, 94.Cairpre Dam Argait, 93.Eochu / Echach, 92.Criffan / Crimthann Lethan, 91.Fiacc, 90.Daig Duirn, 89.Rochadh, 88.Murray / Muireadach Colla Da Crioch - of the Two Countries, 87.Eochy / Echu Doimhlen, *86.Cairbre Liffeachair the 117th King of Tara / Ireland.

Mac Dyer or Mac Dwyer - Irish / Mheic Duibhir. A Sept / Family branch, who had their territory in Co. Donegal in the north - west of the Ulster Province.

Dyer. English occupational name mainly used for Mac Dyer in Ireland, which see especially in Co. Sligo and Co. Roscommon in the Connacht Province. Also cognate with Diver.

Dynes. French - English origins were in Co. Armagh and the surrounding region in the south - east of the Ulster Province.