▁ 9 2 0 ) ▁A aron ▁II ▁ben ▁Benjamin ▁( c . ▁ 9 2 0 s – 9 4 0 ) ▁Joseph ▁ben ▁A aron ▁( fl . ▁ 9 4 0 – 9 6 5 ) ▁ ▁R ul ers ▁of ▁K iev ▁and ▁K ie van ▁Rus ' ▁( c . ▁ 3 7 5 / 8 0 0   – ▁ 1 2 4 0 / 1 3 6 2 ) ▁ ▁Leg end ary ▁and ▁historical ▁r ul ers ▁of ▁K iev ▁ ▁R ur ik ▁D ynast y ▁ ▁The ▁R ur ik ids ▁were ▁descend ants ▁of ▁R ur ik ▁( H r ø re kr ), ▁a ▁Var ang ian ▁pag an ▁kon ung ▁or ▁ch ie ft ain , ▁who ▁supposed ly ▁was ▁of ▁ha p lo group ▁N 1 c 1 , ▁which ▁is ▁common ▁among ▁Fin no - U gr ic ▁pe op les ▁and ▁not ▁so ▁rare ▁in ▁Balt ic ▁region . ▁ ▁All ▁the ▁r ul ers ▁of ▁K ie van ▁Rus ' ▁before ▁the ▁conversion ▁of ▁Vladimir ▁I ▁and ▁all ▁the ▁country ▁to ▁Christian ity ▁are ▁P agan ▁r ul ers , ▁except ▁Ol ga ▁of ▁K iev . ▁ ▁Table ▁of ▁r ul ers ▁( Note : ▁Here ▁the ▁number ing ▁of ▁the ▁princes ▁is ▁the ▁same ▁for ▁all ▁principal ities , ▁as ▁all ▁were ▁titled ▁Prin ces ▁of ▁Rus ', ▁despite ▁of ▁the ▁different ▁parts ▁of ▁land ▁and ▁its ▁particular ▁number ing ▁of ▁the ▁r ul