In the years between 1232 and 1234, a division of property and administration took place between the brothers Albrecht IV
of Habsburg (continuing the older lineage) and Rudolf III of Habsburg (the founder of Habsburg-Laufenburg). The Habsburg-Laufenburg
possessions were located in the Frickgau with its seat at Laufenburg Castle, in the Albgau with Hauenstein Castle, in the
Aargau with Stein Castle, as well as in Obwalden, eastern Switzerland and in the county of Klettgau.
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