Observations on the Dead Emperor Collected from Annals and Laws

...after Philip was killed on the feast of St. Alban, held at Frankfurt, Beatrice, Philip's daughter, was present, and with a loud voice, with groans and sighs and many tears, she complained to the Lord King and the Princes present, and to the whole Roman world in common, regarding the impious death of her Father—therefore, according to the will of all, the King condemned that murderer with a public proscription, etc. Godfrey, Monk of St. Pantaleon, reports similar things for the same year. According to Otto of St. Blasien (not 1208, as he has it, but the following year), King Otto, holding a meeting at Augsburg on the feast of the Epiphany of the Lord, sententially proscribed Otto the Palatine of Wittelsbach, and also the Margrave of Andechs, by Bavarian law because of the killed Philip, and judicially deprived them of their dignities, benefits, and the revenues of their estates without hope of recovery, transferring their dignities to others, granting their benefits to others, and delegating the revenues of their estates to their heirs. Therefore, the proscription was decreed once more, and indeed by Bavarian law, as if to satisfy the ancient custom by which the nobles wished to be judged by their ancestral laws. Struve, in Corpus Iuris Publici Body of Public Law, ch. 25 §. 8. Truly, the ancient Lex Baiuvariorum Law of the Bavarians, tit. II ch. 9, threatens this: But if any Duke from that province, which the King has ordained, should be so bold, or contumacious, or spurred by frivolity, or wanton, and haughty, or proud, and rebellious, so that he scorns the King’s decree, let him lose the dignity of his dukedom, and moreover, let him know that he is condemned and loses the hope of heavenly contemplation and the way of salvation. Based on this law, a capital sentence was once proclaimed against Tassilo, according to Regino for the year 788, but the King, moved by mercy because he was his kinsman, obtained from God and his own loyal subjects that he should not die. As far as Henry, Margrave of Andechs, is concerned, Aventinus, Book VII ch. 2 §. 25, says he fled to Palestine, and Goldastus, on the Kingdom of Bohemia, Book IV ch. 10 §. 25, says he was sent into exile for 20 years by the judgment of the nobles of the Empire.