Red Dead Redemption Trasure Hunter?

I saw before I got the game that to begin the treasure hunter quests you needed a random event to occur to begin the treasure hunter quests.This annoyed me, because I wanted to do them and I didn't want to wait around for it to happen. I bought the game last night, started playing, and about an hour in I saw a prompt of sorts saying "save the treasure hunter", I ran over to him, by then he was already dead so it just said "loot the treasure hunter", and as I had just started, promptly died to some bandits. How will death work in thiss gam? Do I need to somehow try and find his body again? Or will that entire encounter have been erased? Was that my one chance to begin that quest line? Thanks

that whole event will happen again until you get the map