Otto_IV,_Count_of_Ravensberg
Otto IV, Count of Ravensberg (c. 1276 – 1328) was a German nobleman. He was the ruling Count of Ravensberg from 1306 until his death.
Otto was the fifth child of Count Otto III and his wife Hedwig of Lippe (c. 1238 – 5 March 1315), daughter of Bernard III, Lord of Lippe.