Lleu Llaw Gyffes …. is that Lugus?

The character Lleu Llaw Gyffes in the Fourth Branch of the Mabinogi tales, has been associated with the Irish god Lugh and therefore the pan-Celtic god Lugus. Linguistically the name ‘Lleu’ cannot have developed from the Irish ‘Lug(h)’ and can only have developed from Brythonic ‘Lugus’, so if we can indeed associate Lleu with Lugus,…