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In page Irene Angelina:

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After the emperor had died on September 28, Philip was elected King of the Romans in Mühlhausen on 8 March 1198. Irene's father, who had been deposed in 1195, urged her to get Philip's support for his reinstatement;[citation needed] her brother, Alexius, subsequently spent some time at Philip's court during the preparations for the Fourth Crusade. She thus had an early influence on the eventual diversion of the crusade to Constantinople in 1204. Rivaled by the Welf scion Otto IV,[citation needed] Philip was able to consolidate his rule over the German kingdom. On 21 June 1208, he was killed by the Bavarian Count Palatine Otto VIII of Wittelsbach, leaving Irene widowed a second time.[citation needed]