What does the Celtic flag mean?

The most known pan-celtic flag was created by Robert Berthelier, from Brittany, in the 50's. It is made of a green field charged with two yellow interlaced triskells, the first of them symbolizing the Gaelic countries (Scotland, Man, Ireland) and the second of them symbolizing the Brittonic countries (Wales, Cornwall, Brittany). The triskells are inscribed in a yellow Celtic circle, which has been used by the Celts as a rallying sign since the beginning of the century. Green symbolizes both freedom and the sea.

Purple is also often used, as the colour of heather, the emblem plant of the Celts. On 23 August 1901, during its first meeting held in Dublin, the Celtic Congress unanimously adopted the heather as the Celtic flower.