1399-1480. Member of the Brethren of the Common Life.* He became an Augustinian Canon in 1424. An enthusiastic clerical reformer, he supported ,* who made him visitor of Augustinian houses in Saxony and Thuringia. He ultimately became prior of Windesheim where he had taught in early life. He wrote Windesheim's history (Chronicon Windesheime), an invaluable source for the Brethren's early years and for an account of the Dominican Martin Gabow's attack on the Brethren at the * (1414-18), and how they countered it most successfully.