We had one here in Grefrath (Germany, lower rhine area near the dutch border), too. Later it was called "Horbes Bergske" what means "Horbe's little mountain". We had many Mottes in our area, because we had a kind of " triangle border" of 3 great Lords, such as Arch bishop of cologne, Duke of Geldern and Duke of Juelich.
Perhaps, once, when i am grown up, i will build a Dio depicting our "Bergske".