Galahad and Ceridwen
In Welsh mythology, Ceridwen is a sorceress who has a magical cauldron that is associated with changes and rebirth. In another legend, the cauldron of rebirth appears with Bran the Blessed. You could say that the cauldron, a Celtic symbol, is the original basis for the grail legend.
And if you don’t follow this blog, I depict Galahad as a girl! Because why not (no, really, there’s no motive, just that I decided “why not”).
http://www.chalicecentre.net/cauldron-of-changes.html
http://www.new-wisdom.org/cultural_history1/14-europe/2-cauldron_of_rebirth.htm