▁late ▁a unt ▁and ▁her ▁father ' s ▁favorite ▁sister , ▁Julia ▁Dr us illa , ▁Julia ▁was ▁born ▁not ▁long ▁after ▁Cal ig ula ▁married ▁Ca es onia ▁( some ▁sources ▁have ▁her ▁being ▁born ▁on ▁the ▁same ▁day ▁as ▁the ▁marriage ). ▁The ▁date ▁of ▁her ▁parents ' ▁marriage ▁has ▁not ▁been ▁determined ▁for ▁certain , ▁but ▁it ▁is ▁known ▁that ▁it ▁was ▁som etime ▁in ▁the ▁summer ▁of ▁AD ▁ 3 9 . ▁When ▁Dr us illa , ▁as ▁the ▁child ▁was ▁called , ▁was ▁born , ▁Cal ig ula ▁took ▁her ▁to ▁a ▁temple ▁that ▁hous ed ▁stat ues ▁of ▁god d esses ▁and ▁placed ▁her ▁on ▁the ▁lap ▁of ▁Min erva , ▁instruct ing ▁the ▁god dess ▁to ▁nur se ▁and ▁train ▁his ▁new ▁daughter . ▁The ▁reason ▁for ▁Cal ig ula ' s ▁hast y ▁marriage ▁with ▁the ▁neither ▁young ▁nor ▁beautiful ▁M ilon ia ▁Ca es onia ▁was ▁the ▁pur port ed ▁il leg it im acy ▁of ▁his ▁daughter : ▁should ▁Cal ig ula ▁marry ▁his ▁daughter ' s ▁mother , ▁the ▁child ▁would ▁become ▁his ▁he ir . ▁ ▁The ▁order ▁of ▁events ▁suggests ▁that ▁he ▁did ▁not ▁want ▁to ▁marry ▁until ▁a ▁child ▁of ▁his ▁had ▁already ▁been ▁born , ▁a ▁child ▁who ▁would ▁be ▁the ▁purpose ▁of ▁the ▁union . ▁So on ▁after ▁her ▁birth , ▁Cal ig ula ▁set ▁up ▁don ation ▁boxes ▁around ▁Rome ▁marked ▁" Jul ia ' s ▁Dr ink " ▁or ▁" Jul ia ' s ▁Food