Gallagher is another DNA match with Gashley Origins _Conall Gulban_ (http://en.wikipedia.org/wiki/Conall_Gulban) son of 5th century _High King_ (http://en.wikipedia.org/wiki/High_King) and _warlord_ (http://en.wikipedia.org/wiki/Warlord) _Niall _ (http://en.wikipedia.org/wiki/Niall_Noígíallach) The _clan_ (http://en.wikipedia.org/wiki/Clan) hails from the _barony_ (http://en.wikipedia.org/wiki/Barony) of Tirhugh ("land of Hugh") near _Ballyshannon_ (http://en.wikipedia.org/wiki/Ballyshannon) , _County Donegal_ (http://en.wikipedia.org/wiki/County_Donegal) ,_Ireland_ (http://en.wikipedia.org/wiki/Ireland) . The derivation of the surname Gallagher is "foreign help" or "foreign helper" from the _Irish_ (http://en.wikipedia.org/wiki/Irish_language) gallmeaning "stranger" and cobhair meaning "help". It is a matter of conjecture whether this appellation denoted merely an ally of strangers from other parts or, as has been suggested, more particularly a collaborator with the _Norsemen_ (http://en.wikipedia.org/wiki/Norsemen) , who were in those days raiding the coast of north west Ireland. The family's origins are with the _chieftain_ (http://en.wikipedia.org/wiki/Chieftain) Aodh, a name corresponding to the English Hugh (whence Tirhugh), a lineal descendant of _Conall Gulban_ (http://en.wikipedia.org/wiki/Conall_Gulban) son of 5th century _High King_ (http://en.wikipedia.org/wiki/High_King) and _warlord_ (http://en.wikipedia.org/wiki/Warlord) _Niall Noígíallach_ (http://en.wikipedia.org/wiki/Niall_Noígíallach) , known in English as Niall of the Nine Hostages, who is reputed to have brought _St Patrick_ (http://en.wikipedia.org/wiki/St_Patrick) to Ireland as a slave. Aodh established his dunarus or residence at a place corresponding to the present day _townland_ (http://en.wikipedia.org/wiki/Townland) of Glassbolie in Tirhugh. The chieftains of his line ruled in relative peace for several generations until the arrival of the _Vikings_ (http://en.wikipedia.org/wiki/Vikings) in _Donegal Bay_ (http://en.wikipedia.org/wiki/Donegal_Bay) in the 9th century. The ruling chieftain of the time, whose real name is not recorded, was almost certainly obliged to come to some accommodation with the foreign invader resulting in the nickname "Gallcóbhair" which has been applied to his descendants thereafter. [_edit_ (http://en.wikipedia.org/w/index.php?title=Gallagher_(surname)&action=edit&section=6) ]