In old, or possibly ancient welsh there was a word "goleuad", and a name for a favourite sword was possibly "goleuad caledwlch" -- Wondering if this factored into the derivation of the word "excaliber" ( King Arthur's sword.) Goleuad caledwlch meant "shining hard b...

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Related perhaps via pie Ghol thru the italoceltic branch to the ancient Welsh word goleuad meaning "shining?" ("Goleuad Caledwlch" was the name of a mythical famous sword, meaning "shining hard belly"-- to imply invinceable -- I think.)