Hervé IV of Donzy (1173– 22 January 1222[1]) was a French nobleman and participant in the Fifth Crusade.
[2] In a dispute over the château de Gien with Peter of Courtenay, Hervé came to a settlement in 1199, having defeated and captured his overlord Peter at Cosne-sur-Loire.
[3] After Peter's death in 1219, he became Count of Auxerre and Tonnerre also;[4] with Philip II, Marquis of Namur and Robert de Courtenay contesting Auxerre.
[6] In 1204–05 Hervé supported the French against the English in fighting in Normandy, Poitou and Touraine,[7] and in 1209 would take part in the Albigensian Crusade.
[8] In 1214 he took part in the Battle of Bouvines, on the side of King John of England,[9] later with John's intervention Hervé would obtain King Philip's pardon.