User blog comment:BertH/News From the Community - November 2014/@comment-5578690-20141119060949

Hate to alert you BertH, its possible to find the founder of a wiki most of the time by looking through special:listusers as most of the time the founder isn't removed after they leave unless adoption occurs.

anyways, looking at the pokemon wiki its not 10 years. Jellochuu's first edit was January 27, 2005 unfortunately.

Doom wiki is also not 10 years, Fredrik's first edit was January 5, 2005 unfortunately.

you posted these a bit early...doesn't take much effort at all to find the founders and their initial edit. no idea when the automatic staff welcome messages were posted but from these two wikis, that didn't seem to be the case back then.