Eilean Donan, which means simply "island of Donnán", is named after Donnan of Eigg, a Celtic saint martyred in 617. Donnán is said to have established a church on the island, though no trace of this remains. The castle was founded in the thirteenth century, and became a stronghold of the Clan Mackenzie and their allies, the Clan Macrae. In 1719 the Mackenzies' involvement in the Jacobite rebellions led to the castle's destruction by government ships. The castle was reconstructed in the early twentieth century when the footbridge that connects the island to the mainland was first built.