Mrs. Merton's First Name

This is mentioned by Wikipedia, in its deadpan, matter–of–fact way; but otherwise, references to Mrs. Merton's first name appear to be very few and far between.

Wikipedia does cite a source though: it's given on a page on the BBC's own website, about the sitcom Mrs. Merton and Malcolm – a short–lived sitcom, a spin–off from The Mrs. Merton Show, starring Caroline Aherne as Mrs. Merton and Craig Cash as her son Malcolm.

Maybe it was mentioned in the sitcom. I wouldn't know, having never watched it.

Question setters please note: just because it's mentioned on Wikipedia, doesn't mean it's common knowledge.