Arranmore is officially known by it's Irish name, Árainn Mhór

Árainn Mhór has been inhabited since prehistoric times and the promontory fort at Uilinn, which dates from about 800BC

Arranmore is the largest inhabited island off the coast of Donegal

The island is approximately 22 km2 or 8 sq mi

In Irish it was traditionally called Árainn; the adjective mór (large) was added fairly recently. It was also sometimes called Árainn Uí Dhomhnaill, 'Aran of the O'Donnells'

The island is twinned with Beaver Island, an island in northern Lake Michigan where a large number of former residents gathered after being evicted from Arranmore in the mid-1800s

Arranmore is part of the Donegal Gaeltacht and Ulster Irish (Gaeilge Uladh) is the main Irish dialect in use

Arranmore Island Co-ordinates are: 54°59′22″N 8°31′51″W