Rosguill (Irish language and official name: Ros Goill)[1] is a peninsula situated in the north-north-west of County Donegal on the north coast of Ulster, the northern province in Ireland.
Lying between the peninsulae of Fanad to the east and Horn Head to the west, Rosguill is a dichotomy of heathland and ocean.
Between, a mixture of bog, hill and pastureland, the ancient walls, remnants of cattle enclosures, and the various evidences of fortification are proof of the area's use since antiquity.
In the late 4th century, the son of Niall Noigíallach and the eponym of County Donegal (Tír Conaill), Conall Gulban, defeated the warriors of Ulaid, at Ballyshannon and Barnesmore.
Colm Cille was a nobleman born at Gartan, a great-grandson of Conall Gulban, he took holy orders and began proselytising throughout Ireland.
Colm Cille also is said to have erected the High cross in the churchyard, on which allegedly he left the track of his fingers in the stone.
One of the most eastern of all Gaeltachtaí, the area has a vibrant cultural tradition, with many artists and musicians residing in the area Rosguill has been victim to some extent to, the short sighted planning of the 1990s, and to the almost absence of applied legislation previously and, like a great deal of the west coast of the country, has suffered from unchecked ribbon development.