Welsh Mythology- Math Picture

(Download for full view that isn't pixelized)

Math ap Mathonwy to be specific- basically translates as Mathonwy JR, 'cept he shortened it so he'd sound cooler. (Does welsh myth have some sort of thing for predicting future trends?)
Name predates the word mathematics, so not a god of numerology. No jokes about the 'math magician' please. Name predates the CONCEPT of mathematics, we're talking age of bards and blacksmiths here!
Aphrodite, Goddess of Love and Beauty
Snake Goddess
Welsh Mythology- Math
Orca myth
Steampunk Harpy