Rewan IV Síl Eilísin ruled over the Duchy of Eilísin under Lorent between 1648-1666.
He was responsible for the extension of the Eilísiner practice of magically draining the life from the workers in the Vineyards in order to fuel the lands for greater harvests.
Upon his ascension to the throne of Lorent, king Vincent I síl Rubenaire learned of this and ordered Rewan's death, however Rewan mysteriously disappeared the day of his execution