dewi in Celtic Myth

The beautiful Celtic goddess Blodeuedd, meaning 'face of flowers', was conjured up by magic to be the wife of Lleu. She was made from the blossoms of oak, meadowsweet and broom. When she later proved to be an unfaithful wife, she was turned into an owl. www.boudicca.de/jess/jess-blodeuedd_large.htm

In Celtic mythology, Dewi was an ancient god, worshipped primarily in Wales. He was represented by a Great Red Serpent; this symbol in the form of a dragon is on the official emblem of Wales. [1]
Coincidentally, the patron saint of Wales, Saint David, is known in Welsh as Dewi Sant. Dewi in this context is an early Welsh equivalent of the name David (coming from Latin Davidus via Dewydd[citation needed]), although the now more usual Welsh form of David is Dafydd (also from Davidus). The saint's name Dewi appears in various Welsh place names – most notably the town Tŷddewi (literally "house of Dewi", though the English name is St David's), and also in various place names containing Llanddewi ("church of Dewi").
Common first name for women in Indonesia and Malaysia. (http://en.wikipedia.org/wiki/Dewi)