Теодорих I
In 1158 the Lords Theodoric I and Florentin are mentioned in a document of the Emperor Frederick I Barbarossa. Both lords are mentioned in 1166 and 1173, but only Florentin was mentioned in 1183 and in 1187. Inheritance passed to the sons of Theodoric I after Florentin's death, Salentin, Rosemann and Theodoric II. Salentin died sometime after 1213 leaving Rosemann as the most powerful of the three lords. Isenburg-Kempenich benefited greatly from their close relation to Henry II of Isenburg-Grenzau, one of the most powerful lords in the region.