The Cistercian Caesarius of Heisterbach (ca. 1180–1240) is widely known for his Dialogus miraculorum. A similar collection of exempla by Caesarius is considerably less well-known: his Libri VIII miraculorum, the “Eight Miracle Books”. Both works are remarkable sources for 13th century religious and social history, and both mirror the region Caesarius lived and worked. In this article, we systematically analyze and compare persons, places and networks in order to reconstruct Caesarius’ narrative radius.