The White Hart was the personal badge of Richard II, who probably derived it from the arms of his mother, Joan "The Fair Maid of Kent", heiress of Edmund of Woodstock. It may also have been a pun on his name, as in "Rich-hart". In the Wilton Diptych, which is the earliest authentic contemporary portrait of an English king, Richard II wears a gold and enamelled white hart jewel, and even the angels surrounding the Virgin Mary all wear white hart badges. In English Folklore, the white hart is associated with Herne the Hunter.

A hart is a male red deer, synonymous with stag and used in contrast to the female hind; its use may now be considered mostly poetic or archaic. The word comes from Middle English hert, from Old English heorot; compare Frisian hart, Dutch hert, German Hirsch, and Swedish, Norwegian, and Danish hjort, all meaning "deer". Heorot is given as the name of Hrothgar's mead hall in the Old English epic Beowulf.