What goes unmentioned in these tall tales of “Vladimir the vanquisher of the Oligarchs” is what happened to the rest of them.
early 14c., from Old French venquis (past tense), and vencus (p.p.), from veintre "defeat," from Latin vincere "defeat" (see victor). Influenced in Middle English by Middle French vainquiss-, present stem of vainquir "conquer," from Old French vainkir, alteration of veintre. Related: Vanquished; vanquishing.