Devenio vester homo
Defined in 2 dictionaries — Ballentine's (1916), Stimson (1881)
Ballentine's Law Dictionary
James A. Ballentine · 1916
I become your man.
Glossary of Technical Terms, Phrases, and Maxims of the Common Law
Frederic Jesup Stimson · 1881
I. (I become your man.) Words used in doing homage. Devenit: comes or falls to. Devenerunt (they fell to): an old writ which directed the escheator to inquire what lands held in capite fell to the King by the death of the tenant, and of the heir while under age.