sentences:  However, verification of this assumption awaits archaeological examination, but until that is done, a definitive pronouncement as to the village’s beginnings cannot be made.In March 1243, Grumbach had its first documentary mention, when the then holder of the castle, Waldgrave Conrad II of Kyrburg, enfeoffed the Duke of Brabant with it.The occasion was a dispute that the Waldgrave was waging with the Archbishop of Mainz.