Wiching was a Benedictine monk and East Frankish prelate who served as the first Bishop of Nitra in Great Moravia. Born in Swabia, he acted as a counselor to King Svatopluk I and held the position of Bishop of Passau. His ecclesiastical career was defined by his role as a suffragan to Archbishop Methodius, though he frequently clashed with the saint over liturgical practices. Following the death of Methodius, he regained influence in the region, eventually withdrawing from public life after the fall of Great Moravia.