feudatory

nouns

a person holding a fief; a person who owes allegiance and service to a feudal lord

adjectives

of or pertaining to the relation of a feudal vassal to his lord
"a feudatory relationship"
pertains to
owing feudal allegiance to or being subject to a sovereign
"it remained feudatory to India until 1365"
is similar to
subject or submissive to authority or the control of another
"a subordinate kingdom"