Erard II of Brienne

Érard II of Brienne (c. 1130–1191), son of Count Gautier II and Humbeline de Baudement, ruled the county of Brienne from 1161. He accompanied his father on the Second Crusade, staying in the Holy Land until 1151.

In 1188 he and his brother André took the cross with Henry II of Champagne and reached the Siege of Acre by September 1189, ahead of the Third Crusade.

André fell that October, and Érard died at the siege on 8 February 1191, probably of famine or disease. His son Walter III succeeded him; another son, John, later governed Brienne during his nephew's minority and became king of Jerusalem.