Really? Wilhelm? I didn't even know...I just knew Clark W. Grizwald, hee hee.
Three Amigos...hmmm. I promise not to use a search engine, but just let me think on this one for a while...
(muttering to himself: singing bush, sew like the wind...Dusty? No, wait. His son's name in Vacation was Rusty. El Guapo. My little buttercup...hmmm...)