Claim: Gerard Zerbolt was born in 1367 and was taught by Florentius Radewyns.
Evidence: Zerbolt was born in 1367 into a wealthy burgher family in Zutphen, then in the Duchy of Guelders. He got his first education in his hometown, and after attending one or more Latin schools elsewhere, he enrolled between 1383 and 1385 at the Brothers of the Common Life's St. Lebwin school in nearby Deventer. This school had been founded by Gerhard Groote (1340–1384) and in Zerbolt's time was led by Florentius Radewyns (1350–1400).