in the first he was the son of a mortal women and Zues but zues kills her and develops him in his womb and lets nymphs raise him he is basicly born twice
In the second form of his origin is he was son of zues and persephone hera gets the titans too lure him and they eat hi but leave his heart intact and another god saves it and zues puts it in semele and he is born again from her.