In addition, I would refer you to discussion below regarding connections to McAleavy. I am still not sure what the connection is. McALEAVY has yet to earn its own forum, but does the note from E. McAleavey suggest that DUNLEAVY derived from the same base, Macduinnsleibhe, as McAleavy? Should the few McAleavy researchers be posting at this forum?
Note from below: 13th century. Macduinnsleibhe became McAleavey/Mcaleavey in Down,Armagh. Split moved to Donegal eventually became MacDunleavey, Dunleavey etc.