Gunter Prus was Bishop of Płock in 1223 and again from 1227 to 1232.[1] Born into the Prus noble family, he was Canon and Dean of Płock. Following the death of Bishop Gedko Sasinowic, he contended – supported by Duke Konrad I of Masovia – for the bishop's throne against his rival Jan Gozdawita who died in 1227. His episcopacy saw him oppose the Teutonic Knights[2] encourage Duke Konrad, recall the Teutonic Knights to Polish lands[3] and militarily oppose the neighbouring, pagan Old Prussians who were pillaging and slaving in Polish territory at the time.[4] He died in 1232 in Vienna on a diplomatic mission, and he was buried in Rome.