Louis VI of France of Anjou. This was a very dangerous alliance for Louis and would prove so during the reign of his successor, Louis VII of France. As Louis VI approached his end, there seemed to be reasons for optimism. Henry I of England had died on 1 December 1135 and Stephen of Blois had seized the English crown, reneging on the oath he had sworn to Henry I to support Matilda. Stephen was thus in no position to bring the combined Anglo-Norman might against the French crown. Louis had also made great strides in exercising his royal authority over his barons, and
Henry V, Count Palatine of the Rhine first he supported him, but switched sides to Philip of Swabia in 1203. Having divided the Welf allodial lands with his brothers Otto and William of Winchester, Henry then ruled over the northern Saxon territories around Stade and Altencelle and also was confirmed as count palatine by King Philip. When the German throne quarrel ended with Philip's assassination in 1208, Henry again sided with Otto IV. In Imperial service, he tried to ward off the territorial claims by the Rhenish Prince-archbishops of Cologne, Trier and Mainz, though to no avail. After the death of his cousin Arthur I, Duke of