however, Philip was murdered out of rage by the Bavarian count palatine Count Otto VIII of Wittelsbach. Henry of Kalden received permission from the Pope to track down and kill Otto to avenge his master's death. Granted, Henry killed him at Oberndorf, on the Danube, near Regensburg, and cut off his head. He nevertheless accepted the new circumstances and joined the side of the recently crowned Emperor Otto IV, whose closest advisor he became, arranging Otto's marriage with Philip's daughter Beatrice and moulding an aggressive Sicilian policy. After the December 1212 coronation of Henry VI's son Frederick II, however, Otto's position worsened and the marshal returned to the Hohenstaufen fold. He is last documented in 1214 deeds. Sources Annales Casinenses. Translated by G. A. Loud. Ottonis de Sancto Blasio Chronica. Translated by G. A. Loud. Ryccardi di Sancto Germano Notarii Chronicon. Translated by G. A. Loud. Norwich, John Julius. The Kingdom in the Sun 1130-1194. Longman: London, 1970. Matthew, Donald. The Norman Kingdom of Sicily. Cambridge University Press: 1992. Marshals of Germany Christians of the Third Crusade Christians of the Crusade of 1197 Ministeriales