My grandfather was Geza Dicker from Tisadob, Hungary. I was once in contact from a Herman Dicker, librarian at Columbia University in NY. I learned from him that the name Dicker goes back to Bristol, England in the 1100's. The Jews were expelled from England under Edward I and many went to the Netherlands (Dikker) and to Hungary where Jews were allowed to own property. My grandfather arrived in NY in 1908 and came from the area near the Bud Mountains in Hungary. We always assumed any relatives perished in WWII.