Humphrey (VII) de Bohun succeeded his father as Earl of Hereford and Earl of Essex, and Constable of England (later called Lord High Constable). Humphrey held the title of Bearer of the Swan Badge, a heraldic device passed down in the Bohun family. This device did not appear on their coat of arms, (az, a bend ar cotised or, between 6 lioncels or) nor their crest (gu, doubled erm, a lion gardant crowned), but it does appear on Humphrey's personal seal (illustration).