I can't remember if I ever posted in the thread or if it was just me and Loli talking about it so I'll just repeat.
Jasper was like 8 or 9 when Charles found him in the street picking at dead corpses in dark alleyways. Jasper's older brother served in the army and died at war. His parents went missing when Jasper was born so he lived with his brother but after his brother died, he was just living on the streets until Charles came, saved him, and raised him like his own.