John III, Duke of Cleves and Count of Mark, known as John the Peaceful, was the Lord of Ravensberg, Count of Mark, and founder of the United Duchies of Jülich-Cleves-Berg.
John depicted in Johann III with the Virgin and Child
John III, Duke of Cleves, and his only son William.
The County of Ravensberg was a historical county of the Holy Roman Empire. Its territory was in present-day eastern Westphalia, Germany, at the foot of the Osning or Teutoburg Forest.
Sparrenburg Castle