Isn’t there a Dutch Wonderland amusement park in Pennsylvania? Maybe he’s a Wonderland character.
Are you thinking of HERSHEY park or a different one?
I’m not familiar with Hershey park as I don’t live in the US. I did marry into a Dutch family and I had heard about this particular park so it was the first thing I though of when reading that Ethan come from Pennsylvania. Here’s the link to it: