Dunning. English origins. They were at Athlone in Co. Westmeath in the south west of Northern Leinster. Also used as a synonym for Downing, which see, and it is also a Scottish toponymic.

Dunnion. Used as a variant for Downing, which see, in Co. Donegal in the north - west of the Ulster Province.

Dunny. Used as a variant for Downing, which see, in Northern Leinster.

O Dunphy or O Dunfy - Irish / Ua Donnchaidh. A Heremonian Ui Laoghaire Ui Connla Sept / Family branch, who had their territory in the  Ossory kingdom in Co. Kilkenny in the south - west of Southern Leinster in the Barony of Iverk who were a Sept of the Fitz Patricks / Mac Gilla Padraig, which see.

Mac Dunphy - Irish / Mheic Donnchaidh. Cognate with Mac Donagh.

Dunshea or Dunsheath. They have been in Co. Tyrone and Co. Antrim in the Ulster Province since the 17th Century AD after the Confiscation of the 3,500,000 acres of the Heremonian Ui Cobhthaigh Dal Cuinn "Northern" Ui Niaill territories there and the Foreign non - Catholic Plantations there.

Dunwoody. Originally Dinwoodie. Scottish toponymic. They were in the Ulster Province.

O Durack - Irish / Ua Dubhraic. A Heberian Dal gCais Ui Bloid Sept / Family branch, who had their territory in the east of Co. Clare in the north - west of Thomond / Tuaiscert Mhumhain / Northern Munster who became a notable pastoral family in Western Australia. Ancestors - *92.Blood / Blod (Ui Bloid), *91.Cas (Dal gCais) the King of Thomond - *37.Heber "Fionn."

Duris or Duross. Used as variants for Doorish, which see, in Co. Tyrone in Central Southern Ulster.

O / Mac Durkan or O / Mac Dorcan or O / Mac Gurkin - Irish / Ua or Mheic Duarcain - duarcain / pessimist. A Sept / Family branch. who had their territory in Co. Sligo in the north - west of the Connacht Province.

O Durnane. Used as a variant for O Durnin, which see, in Co. Louth in the north - east of Northern Leinster.

O Durnin or O Durnian - Irish / Ua Duirnin - dorn / fist. A Sept / Family branch. who had their territory in the east of the Ulster Province and nearby in Co. Louth in the north - east of Northern Leinster. Ballydurnian is in Co. Antrim in the north - east of Ulster, Durnian usually occurs in the west of Ulster. Durnan, Durnane and Durneen are also variants and Durning an English name was also used as a synonym, which see.

O Durr or O Durry - Irish / Ua Doraidh. A Sept / Family branch, who had their territory in Co. Leitrim and nearby in Co. Roscommon in the Connacht Province. O Dore and O Dorran are used as variants. See also O Dore.

Durran -

O Duvan. A Sept / Family branch, who had their territory in Co. Meath in the south - east of Northern Leinster where they were Chiefs.

Mac Duvan. A Sept / Family branch, who had their territory in Co. Donegal in the north - west of the Ulster Province where they were Chiefs.

O Duvany. A Sept / Family branch, who had their territory in Co. Tyrone in Central Southern Ulster and nearby in Co. Armagh in the south - east of Ulster where they were Chiefs.

Duvick, Used as a synonym for Devereux, which see, in Co. Westmeath in the south - west of Northern Leinster.

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