A Feudal Tenant
Puzzle 20 of Famous Horses Hard Pack
Question is: A Feudal Tenant
and the answer is: VASSAL
Word Meaning:
VASSAL — (historical, law) The grantee of a fief, a subordinate granted use of a superior's land and its income in exchange for vows of fidelity and homage and (typically) military service.
Definitions from Wiktionary.