Erard II (died 16 June 1236) was the Sire de Chacenay (Chassenay) from 1190/1.
[1] In 1209 Erard, with the consent of his unnamed wife, confirmed a donation to Basse-Fontaine by a certain Agnete, specified as domina of Chacenay, probably his grandmother Agnes de Brienne.
[4] Upon his return, Erard paid homage to Theobald, Count of Champagne and made a donation to the convent of Argensolles, which had been founded by Blanche of Navarre.
[2] Erard was the second husband of Emmeline (Emelina) de Broyes (died 1249, before April), widow of Odo II of Champlitte.
Erard was faced with a possible divorce when he sold his step-daughter, Oda's, inheritance to the Knights Templar.