Baldurs-brá, the complexion, or facial appearance, of our beloved sun-god. In English eye of day. Beautiful.
I do not know why some Margarita took Baldurs place. Some conversion, I suggest. But once we hear Baldursbrá (pron.-brá as –brau, not bra), we will use that term. Baldursbrá grows wild in Iceland, always close to the sea on sandy coast/beach.