User blog comment:DestinySara/Do you think Jason ever searched for his family?/@comment-4093491-20111217092757

He must have, not while in camp but during on a quest 'cause Camp Jupiter is full year(?) unlike Camp Half-Blood where you can go home. But he never found something or just the information that her mom is dead and as you mentioned Juno would've made sure that he never encounters Thalia.