Radim Gaudentius was a Benedictine monk and the first archbishop of Gniezno. Born around 970 in Libice nad Cidlinou, he was the illegitimate son of a Bohemian nobleman named Slavník. Along with his half-brother, Adalbert of Prague, he traveled to Rome in 989 to join a monastery on the Aventine Hill. After surviving a mission to Prussia that resulted in the death of his brother, Radim worked in Rome to support the canonization of Adalbert.