I don't personally know a Steven Preader, but the Preaders are my family. Preader is the only spelling that we know of that represents this particular family. It has been spelled Praeder though by folks who accidently changed the letters around.
We believe the original spelling was Preda or something similar. Our people come from a group of Islands called the Azores, 1,000 miles away from Portugal.
This group of Preaders originate from the San Jose, Ca., area and surrounding communities. If this info. sounds familiar to you, please do e-mail me.