Answer: subinfeudation

AnswerCrossword Clue
subinfeudationthe sublease of a portion of a feudal estate by a vassal to a tenant who pays fealty to the vassal
subinfeudationthe estate or fief so created
subinfeudationthe tenure established
subinfeudationthe granting of a portion of an estate by a feudal tenant to a subtenant, held from the tenant on terms similar to those of the grant to the tenant