From what I've got on the Welsh language places, Myfanwy means 'my rare one' or 'my dear one'. But hey, whatever works! "Yannat" ... hmmm... Fanfic has a tendency to shorten Ianto to Yan (which, ew). Any connection? Hee!

Having a word meaning "the person who introduced me to my boyfriend" reminds me fondly of Yiddish. It has a great vocabulary of familial relationships. It's the only language I know with a word like (phonetic) "machetaynisteh" which means "my child's mother in law", "the mother of my child's spouse". The male version is (phonetically) "mechutn". You put them together and get "machetoynim".