Display the creator of a new user

If XWiki.Admin is creating a new user XWiki.newuser, the XWiki.newuser appears as the creator of the page. XWiki.Admin appears nowhere in the history of the document. Therefore, it looks impossible to get this information from the wiki.

An idea proposed is to add the name of this user (XWiki.Admin in the example) into the comment of the first save of the page. Maybe a parseable comment will ease an eventual script that look for this information.