Donahey
Donaghy/Donahey is not strictly a variant of Ó Donnchadha but of Ó or Mac
Donnchaidh. I have included Donaghy/Donahey on my variant listings because in many
family histories the names Donohoe and Donaghy have been interchanged.
Denian
Deniou
Deniau
Dunnahough
Donohoughe
Donnahaugh
Doneyhoo
Denahou
Donah
This name is similar to the Donnas and Dunnas of other Caribbean islands