Paracelsan

Know ye not then the Riddling of the Bards? Alfred, Lord Tennyson, Gareth & Lynette

A constructed alphabet¹ common mostly in mystical circles. The author is the pseudonymous author Paracelsus² - or “he who surpasses Celsus” - who is commonly suspected to be Merlin.

While the use of the alphabet, rare as it is in Britain, is often associated with mystical use and even power from the letters themselves - it doesn’t usually come with claims of the same Language of the Birds origin as, say, Edenic.

Footnotes

1. Using the script of the Alphabet of the Magi ↩

2. Not a typical part of the Arthurian legend, but a direct reference to a real later-Medieval author. ↩