Marshal Summerfield III was the son of Marshal Summerfield II.
During his time as director, Marshal III began building up a clique known as the Wayfinder Order in Caprisi Academy. The order would later be famous for its "right-wing views and kinky rituals".
In the late 23rd century, Marshal III had a son whom he named Marshal Summerfield IV. He passed on the position as director of Caprisi Military Academy to Marshal IV.