I'm not sure, but it could be due to the Amish and similar groups with a Germanic/Scandinavian background. Barring that, I have no idea what would make
Johan /
Johann so popular.
"A room without books is like a body without a soul." - Marcus Tullius Cicero
http://listography.com/Telfalathiel
http://telfalathiel.tumblr.com/
http://babynames.com/namelist/9415432
http://www.behindthename.com/pnl/71785