Treasurer

google

ref

Middle English: from Old French tresorier, from tresor (see treasure), influenced by late Latin thesaurarius .

wiktionary

ref

From Middle English tresorer, from Old French tresorer, from tresor + -er. Displaced native Old English māþmhierde.

etymonline

ref

treasurer (n.)

late 13c., from Old North French, Anglo-French tresorer, Old French tresorier, from tresor (see treasure (n.)). Treasury bill attested from 1797.