Board Thread:The Reference Desk/@comment-4189499-20151024064923/@comment-26469787-20151024102631

It is indeed true that Moffat humorously claimed in a semi-recent (last couple of years) issue that keeping the secret of the Doctor's name was something each showrunner has had to do, as if it came out, the show would have to be renamed "Mildred". Just a silly joke made by a creative contributor, nothing to support it being true "in-universe" has, and I'd wager ever will, exist.