Hello,
I am also a Syperek and most of my Syperek relatives live here in Canada, either in Ontario or Nova Scotia. It is my understanding that my grandfather, Piotr (Peter), had his name accidentally but legally changed by the Polish gov't either as an infant on his birth certificate or during WWII, in which he fought as a fighter pilot. Since the "z" was omitted from the proper spelling of "Szyperek" I thought the only Sypereks were descendents of my granddad. I would be interested to hear anyone's geneology, connections to Poland, and how far back the name goes.