Erard II of Brienne (died 1191) was count of Brienne from 1161 to 1191, and a French general during the Third Crusade, most notably at the Siege of Acre.[1] He was the son of Gautier II, count of Brienne (Gautier II de Brienne), and Humbeline Baudemont, daughter of Andrew, lord of Baudemont(André de Baudement) and Agnes of Braine.[2] His paternal grandparents were Erard I, Count of Brienne and Alix de Roucy. During this siege, he saw his brother André of Brienne die on 4 October 1189, before being killed himself on 8 February 1191. Erard II's nephew was Erard of Brienne-Ramerupt.
Before 1166, he married Agnès of Montfaucon (Agnès de Montfaucon) († after 1186),[3] daughter of Amadeus II of Montfaucon and of Béatrice of Grandson-Joinville. Their children were: