Rubuta ci gaba don wannan sakin layi - Garin Becej yana cikin Hungary a lokacin, kuma lokacin da bai kai shekara ɗaya ba iyalinsa sun rasa komai a cikin rikice-rikicen juyin juya halin 1848. Mahaifinsa, wanda ya yi gwagwarmaya a cikin juyin juya hali
, ya mutu a shekara ta 1856, mutum ne da ya karye. Mahaifiyarsa ta yi imani sosai da ilimi kuma ta yi isasshen kuɗi don kiyaye shi, da 'yan'uwansa biyu, a makaranta. Aleksandar Popović ya koyar da wasu ɗalibai kuma ya sami tallafin karatu don kammala karatunsa na asali a Pest. Babban ɗan'uwansa Stephan ya sami fifiko tare da Yariman Serbia Alexander Karađorđević wanda ke zaune a Pest a lokacin, don haka ya sami damar tallafawa dangin, yana ba Aleksandar Popović damar halartar Jami'ar Budapest inda ya yi karatun ilimin ƙasa a ƙarƙashin Farfesa József Szabó.