1) From the Tribal Waypoint Shrine, head towards the bandit camp, but not far - it's in a chest in the Goblin camp near the fallen log bridging the river.
2) From #1, cross the fallen log and follow the path through the canyon and back up until you get to the stone bridge crossing the canyon. There will be one of Bellegar's shrines up ahead. The parchment is in a chest there.
3) At the entrance to the Bandit camp (but still on the Broken Valley map), look to the left of the building which has/had Christopher in it. There's a chest behind a wooden wall.
4) From the bandit camp, continue past the mine until you find another one of Bellegar's Shrines, the last parchment is in a chest there.
