Until the death of the emperor, Louis remained a loyal supporter of Henry VI and accompanied the Hohenstaufen in 1194 also to Italy on his second expedition for the conquest of the kingdom of Sicily, which was entitled Henry's wife Constance as sole heir. In the struggle for the throne after the death of Henry VI, he remained one of the main supporters of the Hohenstaufen Philip of Swabia. His continued support, however, had a price. When the Landgrave of Stefling died without an heir in 1196, instead of including the region over to his royal domain, Henry enfeoffed it to Louis instead. Suddenly, Eberhard, Archbishop of Salzburg and Conrad, Bishop of Regensburg, falling at variance, declared war on Duke Louis and spared no sacred nor profane structures. It was only through Louis's character that peace was restored.