Island of the Mighty

   Ynys Y Kedyrn, the Island of the Mighty, is one of the many names bestowed upon Britain by the Welsh. Lady Guest states that a Triad from her sources, in which several more of these ancient appellations are preserved, asserts that while yet uninhabited the Island was called Clas Merddin, but that after its colonization it bore the name of Vel Ynys, which was again changed in compliment to its conquest by Brut, into Ynys Prydain, or the Island of Brut. The same Triad states that some authorities attribute the more modern designation to its conquest by Prydain son of Aedd the Great.