I was afraid I had protected the profile because I remember working on a Herfast or Herbastus de Crépon just this weekend (with all that trying to add dates to profiles without dates) but no, it wasn't me.
The project protection was set some time ago by Katherine, apparently because she recognized the profile as a member of nobility and wanted to protect the name from being changed to DeCrépon, De_Crépon or something like it. The relevant project would be pre-1500 European Aristocrats.