Sorry Paul, but I don’t think there’s such a word as Llyfrgellyddes, or even if there is, it’s never used. Both a male and female librarian would be refered to as Llyfrgellydd
Hi. My name is Jessamyn West and I'll be your librarian today. I work in rural Vermont as a library technologist and do user support at Open Library. My personal blog is at jessamyn.com. This blog's twitter feed @librarian.net. Feel free to contact me if you have questions or comments.