Heinsberg had promised a certain benefice to Louis de Bourbon, the Duke's nephew, but gave it to another claimant. Philip having sent an envoy to demand an explanation, the Bishop said: 'Let His Highness have patience. I intend him for a better benefice than that.' 'Which?' he was asked. 'The one I hold myself,' he replied. He soon repented of this rash promise, and was about to journey into France and ask protection from the King, when Philip invited him to The Hague. There he was treated with all honour till the day of his departure, when the Duke suddenly asked him if he intended to fulfil his promise about the bishopric. Heinsberg declared that he would certainly keep his word, but was, in spite of what he had said, taken into a dark room, where he found a Franciscan and an executioner, clothed in black and armed with a naked sword, awaiting him. 'Most Reverend Seigneur,' said the Franciscan, 'you have twice broken faith with the Duke. Resign at once, or prepare to die.' At these words, so the story goes, Bishop Heinsberg was so terrified that he signed his resignation on the spot in favour of Louis de Bourbon, who was not yet in Holy Orders, and was, indeed, a mere youth of eighteen, a student at the University of Louvain, whither his uncle had sent him to be educated. The Chapter of St. Lambert, by whom the bishops had always been chosen, complained; but the appointment was confirmed by the Holy See, and the whole spiritual and secular administration of the Principality passed into the hands of the young prelate. This was a triumph for the House of Burgundy, which had long aimed at extending its influence to the Principality of Liége; but in it few years the clergy, the nobility, and the people united against the Duke's nephew, and combined to drive him from the management of their affairs. In order to protect themselves against Philip, who might interfere on behalf of his nephew, they appointed as regent Mark of Baden, brother-in-law of the Emperor Frederick III., who came to Liége attended by a body of German troops.