 The emperor came to Lenzburg Castle and personally supervised the division of the estate, giving a majority of the lands to his son, the Count palatine Otto of Burgundy.However, after Otto's death in 1200, the House of Hohenstaufen was forced to withdraw from the Aargau.By way of two neighbouring aristocratic houses (Andechs-Merania and Châlon), in about 1230 Lenzburg castle came by marriage into the possession of the Counts of Kyburg.