Note:Explanatory Notes
The Descendents that aided the Shining Force: 
Descendent of the Navigator: Benetram.
He keeps the knowledge about the North, the Ancient Road, and the way to get to Bulzome's shrine. When the time comes, he has the obligation of guiding the new Shining Force. To prepare for this moment, Benetram was desperate in digging out the ruins of ancient civilization to make up for the knowledge lost during this long, long wait. 
Descendents of the Conveyer: Oneanera and Keeper.
A thousand years ago, part of the ancient Shining Force stayed and built the fortress (Remotest) in The North.They keep all the ancient knowledge.Oneanera, who waits at Aural Village for the Innovator and tests his powers, and Keeper, the Inferior Innovator that awaits the Shining Force in Remotest, are both Descendents of the Conveyer. 
Descendents of the Warrior: Conrad & Synbios.
Conrad was the descendent of the ones who fought Vandals in the ancient battle. Unlike Benetram, he has very little knowledge of the past. But fate has leaded him to meet Benetram, and begun confronting Bulzome even without knowing he's Descendent of the Warrior himself. After he died his son Synbios inherited his will and mission.