Flag of the Isle of Man Flag of the Isle of Man The flag of the Isle of Man or flag of Mann () is a triskelion, composed of three armoured legs with golden spurs, upon a red background. It has been the official flag of Mann since 1 December 1932 and is based on the Manx coat of arms, which dates back to the 13th century. The three legs are known in Manx as "" ("the three legs"). The triskelion is an ancient symbol, used by the Mycenaeans and the Lycians. It is not known for certain why the symbol was originally adopted on the
Terminology of the British Isles of Celts inhabiting the islands, but this term was not used by the Greeks or Romans for the inhabitants of Britain or Ireland, nor is there any record of the inhabitants of the British Isles referring to themselves as such. Nevertheless, Roman administration later incorporated the province of Britannia into the praetorian prefecture of Gaul, in common with Hispania, which had Celtiberians. Armorica, where the Bretons would settle, was part of "Gallia Celtica", so there were tertiary relations between the Britons and Gallic Celts at least. In addition, the Parisii of Gallia Celtica are thought to have founded Aldborough in