No real idea of where's best to file this, so putting it here as a stab in the dark. Lego, Keegan, please move as appropriate.
An enwiki user called Mirwin was renamed automatically to Mirwin~enwiki (more about that in a moment) but four edits he made a very long time ago got detached for some reason.
See: https://en.wikipedia.org/wiki/Special:Contributions/Mirwin
Regarding the renaming itself, the account belongs to a deceased editor who passed away without attaching it to the SUL for that name, which is User:Mirwin at Wikiversity. I've placed a steward request for the enwiki account to be renamed back to Mirwin and attached to the SUL.
https://meta.wikimedia.org/w/index.php?title=Steward_requests/Username_changes&oldid=12732258#Account_of_a_deceased_user_on_enwiki_needs_renaming
Thanks,
Scott.