The king was now of age, but Marsk Tyrgils continued for several years at the helm. His relations to the Church show what a wise and vigorous statesman he was. When in the name of the king the privileges to the Church were once more granted, as by his predecessor, Tyrgils made the important exceptions that the Church should fulfil for its possessions the same military duty as all others in the country, and that certain large fines should be reserved for the king. The ecclesiastics took quietly to these restrictions at first, but soon an open conflict ensued. Another and greater one arose between the king and his brothers, Eric, duke of Sweden, and Valdemar, duke of Finland. It resembles very much the conflict between their uncle Valdemar and his brothers. In both cases there was a weak and deceitful king who was inferior, if not in wretchedness, at least in courage, to one of the brothers. After the first conflict was ended, the dukes selected Marsk Tyrgils for their prey. In March, 1305, Tyrgils saw the king grant to the Church the important privileges held back until then. In December of the same year the king and his brothers came upon Tyrgils unprepared. He was imprisoned, and in a shameful manner dragged to Stockholm, travelling night and day through the cold of winter, probably by some fraudulent legal process found guilty of treason, and beheaded, February 10, 1236. As a climax to this foul political murder, Tyrgils Knutsson was buried on the place of execution. Later, his body was removed to the church of Riddarholm and placed at the side of King Magnus, whose son he had served so faithfully.