Johann I von Turn
Johann I von Turn (c. 1280–1324), son of Peter II, ruled the Valais barony from the Gestelnburg. By his marriage to Elisabeth von Wädenswil he acquired the Bernese Oberland lordships of Frutigen and Mülenen.
He served in turn as imperial vicar of Como in 1311, Landvogt of the bishop of Sion from 1315 to 1317, and imperial governor at Milan in 1322. Johann died in 1323 or 1324, and his son Peter III succeeded him.