Wikipedia
Gleann Cholm Cille ( anglicized as Glencolumbkille or Glencolmcille) is a coastal district in the southwest Gaeltacht of County Donegal, Ireland. It is also a civil parish in the historic barony of Banagh.
While Gleann Cholm Cille is still an Irish-speaking community, English has been steadily replacing Irish as the main language, with only 34% of the people speaking Irish on a daily basis in 2002. Cashel (Irish: An Caiseal) is the main village in the district.
The name translates into English as "valley of Colm Cille". Saint Colm Cille, or Columba, is one of Ireland's three patron saints (along with Saint Patrick and Saint Brigid). Colm Cille and his followers lived in the valley for a time and the ruins of several of their churches can still be seen there.