It seems to be one of 2 major quests in GoD. The 14 heroes that were sent to orignally scout the new zones have disappeared and you have been asked to bring back the 'writings' that belonged to several of the scouts. He also gives you a list of other names of people on the ship that were relate in some fashion to one of the scouts.
Each of these other persons when talked to states in a round about fashion what item they want brought back to 'remember their loved one'.
I assume by the texts of this quest that all the scouts (corpses or alive) are found in Tacvi. This is the zone where the leader of the enemy resides so I am sure the reward for completing all facets of this quest is going to be pretty uber.