All Bronwyn’s, take heart! ‘white breasted’ is a literal translation. As a child I didn’t like the interpretation but when I was in my 20’s I met a Welshman who said it really means ‘pure hearted’. That makes more sense, but I still never went topless as I wanted to stay true to my name!
Also called Bronwen or Branwyn, she is the Welsh goddess of Love and Beauty. Her name has been translated as 'white-breasted', 'fair-breasted', or 'white raven', and ravens and starlings are her animals. The Alder tree belongs to her. She was regarded as a moon goddess, as well as the Daughter of the Sea. Since her attributes are similar to those of the Roman goddess, Venus, she was known as the Venus of the North Sea. She is known as "the giver of bracelets." Worshipped throughout Celtic lands, including Manx, Branwen is the keeper of the magickal Cauldron of Plenty, and she governs regeneration, growth, and healing. She is honored during each waxing moon as the Maiden, and the full moon in June is Branwen's moon. She is one of the the five goddesses of Avalon -- called by some the Lady of the Lake herself -- and along with Rhiannon and Cerridwen, is one of the three mother goddesses of Britain. Like many Celtic goddesses, she was once a real person, a princess of the house of Llyr who was wed to the High King of Ireland. An insult at her wedding feast brought war between Ireland and Wales. Her brother, Bran the Blessed, was killed during the war to rescue her from oppression at the Irish court, and when she later returned to Wales, she died of a broken heart.
Bronwyn is not by itself Welsh; it is the Irish spelling of the Welsh name Bronwen. -wen is feminine in Welsh and masculine in Irish; -wyn is feminine in Irish and masculine in Welsh.