Heriot

Heriot, from Old English heregeat ("war-gear"), was originally a death-duty in late Anglo-Saxon England, which required that at death, a nobleman provided to his king a given set of military equipment, often including horses, swords, shields, spears and helmets. It later developed into a kind of tenurial feudal relief due from villeins.

The equivalent term in French was le droit du meilleur catel.