advowry
/ədˈvaʊ(ə)ri/historical in later use
noun
(A) Ecclesiastical Law. = advowson; the office or function of an advowee. (b) = avowry; (also) a person responsible for providing this protection (or perhaps: the payments made to ensure this).
Origin
Late Middle English. Originally a variant of avowry, now distinguished in form in the meanings below.