u ▁hung ▁his ▁hunting ▁bag ▁was ▁an ▁I re ▁tree . ▁So , ▁I ree ▁was ▁named ▁after ▁that ▁tree . ▁Similarly , ▁the ▁place ▁where ▁A rol u ' s ▁associ ates ▁killed ▁their ▁first ▁ele ph ant ▁was ▁named ▁I bit i ▁a ▁ti ▁ri ▁er in ▁pa ▁( i . e . ▁the ▁place ▁where ▁we ▁killed ▁an ▁ele ph ant ). ▁Later , ▁it ▁was ▁short ened ▁to ▁– “ A ▁r ' er in pa ”, ▁then ▁“ Er in pa ” ▁and ▁finally , ▁ ▁E ri pa . ▁E ri pa ▁ ▁town ▁shares ▁an ▁ind is put able ▁clos eness ▁with ▁I ree ▁town ▁up ▁till ▁today . ▁The ▁found ing ▁and ▁establishment ▁of ▁I ree ▁was ▁the ▁hand i work ▁of ▁three ▁brothers , ▁namely : ▁Lar oo ye , ▁A rol u ▁and ▁O y ek un . ▁This ▁tri o ▁has ▁over ▁the ▁years ▁become ▁known ▁in ▁I ree ' s ▁or al ▁tradition ▁as ▁" the ▁three ▁great ▁brothers ". ▁ ▁A rol u ▁was ▁the ▁first ▁to ▁sett le ▁at ▁the ▁location ▁that ▁became ▁I ree ▁today . ▁A rol u ▁was ▁an ▁imm igr ant ▁from ▁I pe e , ▁and ▁a ▁son ▁of ▁the ▁O ni pe . ▁His ▁other ▁brothers ▁were ▁Lar oo ye , ▁O y ek un , ▁A ko isa ▁and ▁O la olu . ▁The ▁O ni pe ▁himself ▁had ▁migr ated ▁from ▁O yo ▁with ▁fan fare . ▁The ▁A la af