My ggrandfather's name was Johann Dionis Schaefer (from Prussia, Rhineland, Bonn, suburb of Witterschlick). Born in 1821 Witterschlick, He was a teacher of music at Bonn University. Although Dionis (or Dionysius) is an unusual name nowadays was it once common? Has anyone seen it very often? It IS separate and unrelated to the name Dennis, isn't it? Thanks, Sue (As a wine lover, I'd like to imagine that he was named after the Greek God of Wine, but there is probably a Catholic saint somewhere named Dionysius. Was the Bonn area a grape growing area? surely its too cold up there.. sorry for my dumb questions.)