▁Ful via ▁From ▁his ▁mother ▁he ▁had ▁two ▁older ▁half - s ib lings , ▁Cl odia ▁Pul ch ra ▁and ▁Pub lius ▁Claud ius ▁Pul cher . ▁When ▁his ▁father ▁died ▁in ▁ 4 9 ▁BC ▁his ▁mother ▁rem ar ried ▁to ▁Mark ▁Anton y , ▁from ▁him ▁he ▁gained ▁two ▁more ▁half ▁sib lings , ▁Marcus ▁Anton ius ▁An ty ll us ▁and ▁I ull us ▁Anton ius . ▁Cur io ▁might ▁also ▁have ▁had ▁a ▁pat ernal ▁half - bro ther ▁by ▁the ▁same ▁name ▁whom ▁might ▁have ▁died ▁young , ▁since ▁his ▁brothers ▁full ▁name ▁was ▁re used ▁for ▁him . ▁Re using ▁names ▁from ▁sons ▁who ▁had ▁died ▁was ▁common ▁in ▁Rome ▁during ▁the ▁Republic . ▁In ▁ 4 0 ▁BC ▁his ▁mother ▁Ful via ▁also ▁died , ▁meaning ▁that ▁he ▁was ▁now ▁likely ▁under ▁the ▁cust ody ▁of ▁his ▁step - father ▁Mark ▁Anton y ▁whom ▁rem ar ried ▁to ▁Oct avia ▁the ▁Young er , ▁sister ▁of ▁the ▁future ▁em peror ▁August us . ▁The ▁remainder ▁of ▁his ▁child hood ▁was ▁likely ▁spent ▁either ▁in ▁Rome ▁with ▁Oct avia ▁or ▁with ▁Anton y ▁on ▁travel s ▁tr ought ▁the ▁Roman ▁Provin ces . ▁When ▁the ▁Final ▁War ▁of ▁the ▁Roman ▁Republic ▁broke ▁out ▁Cur io ▁s ided ▁with ▁his ▁step - father ▁Mark ▁Anton y ▁and ▁his ▁next ▁wife ▁Cle op atra ▁over ▁Oct avia ▁and ▁August us . ▁He ▁and ▁his ▁half ▁brother ▁An ty ll us ▁( as ▁well ▁as ▁Cle op atra '