From Silver Sun Republic Codex

Known as the Warrior Saint of Requesta, Istria is celebrated for his martyrdom in the earliest days of the Silver Sun. Before his death he was able to record his prophecies and visions as granted to him by Requesta. A contemporary of Spero, Istria gives special insight into the very foundation of Requestran beliefs. Although not considered the primary prophet of his time, many of his visions support the prophecies of Spero.