The nearby town of Hamm was founded by his son Adolf I, Count of the Mark in 1226, it soon became most important settlement of the county and was often used as residence.
Lähedalasuva Hammi linna asutas aastal 1226 tema poeg, krahv Adolf I, varsti sai see kõige tähtsamaks asulaks krahvkonnas ja seda kasutati sageli residentsina.