I'm a Minnesota native.
I was living in Nevada, and at Yahoo, including the evolution/creation site the spawned , I went by the name nevadamoose.
When I moved back to Minnesota I tried changing my Yahoo name to minnesotamoose, or something like that. My new name choices had already been taken. I tried minnemoose, which was also already taken. Yahoo suggested (for uncertain reasons) that "us" be added to the name. I though it has a nice fake Latin sound to it, so I went with it - Thus minnemooseus.
When I joined I brought the Yahoo name along.
Moose