obedientiary
The holder of a monastic rank or office below that of superior.
Each obedientiary held his own rural estates as well as properties in the city and was supported by various unlanded officials.
Where it comes from
From Medieval Latin obedientiarius, from Latin oboedientia (“obedience”) + la + -arius. By surface analysis, from obedient + -i- (“connecting vowel”) + -ary.
Adapted from the Wiktionary entry obedientiary (CC BY-SA 4.0).