Please answer the following question: - issue is mechtild of holstein-kiel gerhard i , count of holstein-itzehoe ludolf , queen of denmark john i , count    - succession is count of holstein count of schauenburg    - reign is 1227 - 1238 1225 - 1238    - successor is gerhard i john gerhard i    - spouse is heilwig of lippe    - predecessor is valdemar ii of denmark adolf iii    - mother is adelheid of querfurt    - death date is 08 july 1261    - house is house of schauenburg      - father is adolf iii , count of holstein    - birth date is before 1205      - image is adolf iv von schauenburg 01.jpg    - death place is the franciscan friary in kiel    Given the details above, guess who could this information be about.
Answer:
adolf iv of holstein