Right you are. The founders of Schaumburg IL came from Schaumburg, Niedersachsen, which was originally named Schauenburg but got corrupted over time. I just never cared to investigate, as I never thought of Schaumburg IL except as the home of the increasingly dodgy Woodfield Mall, bland faceless office buildings, and I believe they have an IKEA there or something. Besides, I think “foam castle” is funnier.
And don’t get me started on Darmstadt…