Holy Isle

The island has a long history as a sacred site, with a spring or holy well held to have healing properties, the hermit cave of 6th century monk St Molaise, and evidence of a 13th-century monastery. An old Gaelic name for the island was Eilean MoLaise, Molaise's Island; this is the origin (via Elmolaise and Limolas) of "Lamlash", the name of the village on Arran that faces Holy Island.

Some runic writing is to be found on the roof of St Molaise's cave and a Viking fleet sheltered between Arran and Holy Isle before the Battle of Largs.