マルク伯領
A peace was signed between the two brothers in 1430 and confirmed in 1437. As a result, Gerhard ruled the largest part of Mark, but was to be succeeded by his nephew John. He was not allowed to call himself Count of Mark, but has to use the title Count zur Mark. After Gerhard's death in 1461, the County of Mark and the Duchy of Cleves were reunited again.