In the course of the fierce Investiture Controversy, the rise of the comital dynasty continued with the appointment of Siegbert's son Adalbert as Archbishop of Mainz in 1111, and in 1118 his elder brother Frederick was first mentioned with the title of a "Count of Saarbrücken". However, Frederick's son Simon I had to face the slighting of his Saarbrücken residence by the forces of Emperor Frederick Barbarossa in 1168. Upon his death about 1183, the county was divided into two parts, when the Palatinate territories were separated to form the basis of the County of Zweibrücken. The Alsatian possessions had been lost already around 1120.