In the Mabinogion, Perceval has a ladye love, whom, however, he only loves with distant chivalrous devotion, and who answers to his sister, who in Mallory's beautiful story gave the blood from her own veins to heal a lady who could only be cured with the life-blood of a pure virgin.
    In the Mabinogion her name is Angharad Law-eurag, or with the hand of gold, and Angharad, or the free from shame, the undisgraced (from angharz), was continued in Wales, but it is now generally considered as the equivalent of Anne, and thus accounts for Anna being universally called in romance the sister of Arthur, and mother of the traitor nephew Medrawd.
    The Welsh Angharawd, probably the source of Ankaret, which occurs in the family of Le Strange in 1344, is generally supposed to mean an anchorite; but as it has no parallel on the Continent, it is much more likely to be the Welsh Angharad.  Annan was, however, a separate name—for the three sprightly ladies of Britain are Annan, Angharad, and Perwyr. (History of Christian Names, Yonge, 1884).