sentences:  In the winter of 1225/1226 the new Archbishop of Cologne, Heinrich von Müllenark, besieged and destroyed his castle.His cousin, Adolf von der Mark, was attributed large portions of Frederick's possessions and as such re-united the former territory of Altena.Frederick travelled with his brothers Dietrich and Engelbert, bishops of Münster and Osnabrück (both also implicated in the death of the Archbishop), and the notary of Isenberg with the necessary documents to the Curia in Rome, in order to have the excommunication lifted.