Hi! I really don't know much other than what I posted already. I had to request that this surname be opened, and obviously, you're the first one who's responded at all. The only thing that I've heard is that the spelling may have been changed from Rotti, and I found some Rotty's in St. Louis that seemed to originate in the Netherlands. Unfortunately, other than my gggrandfathers' names (both were Anton), I don't know anything else. What about your side?