id author title date pages extension mime words sentences flesch summary cache txt en-wikipedia-org-4312 Joannes - Wikipedia .html text/html 1653 286 66 Joannes or John (Latin: Iohannes; died June or July 425) was western Roman emperor from 423 to 425. In the interregnum, Honorius's patrician at the time of his death, Castinus, elevated Joannes as emperor. Joannes had hoped that he could come to an agreement with the Eastern Emperor, but when Theodosius II elevated the young Valentinian III, first to Caesar, then to co-emperor as an Augustus (undoubtedly influenced by Valentinian's mother Galla Placidia), he knew he could only expect war. After some skirmishing, Placidia, regent to her son, and AĆ«tius came to an agreement that established the political landscape of the Western Roman Empire for the next thirty years. Western Roman emperor Constantine III with son Constans II Constantine IV with brothers Heraclius and Tiberius and then Justinian II as co-emperors John II Komnenos with Alexios Komnenos as co-emperor Executed Roman emperors ./cache/en-wikipedia-org-4312.html ./txt/en-wikipedia-org-4312.txt