At the opening of his reign Richard had one all-engrossing desire; he was set on going forth to the Crusade for the recovery of Jerusalem which had been proclaimed in 1187, partly from chivalrous instincts, partly as a penance for his misconduct to his father. He visited England in 1189 only in order to be crowned, and to raise as much money for the expedition as he could procure. He obtained enormous sums, by the most unwise and iniquitous expedients, mainly by selling to any buyer that he could find valuable pieces of crown property, high offices and dangerous rights and privileges. The king of Scotland bought for 15,000 marks a release from the homage to the English crown which had been imposed upon him by Henry II. The chancellorship, one of the two chief offices in the realm, was sold to William Longchamp, bishop of Ely, for £3000, though he was well known as a tactless, arrogant and incapable person. The earldom of Northumberland, with palatine rights, was bought by Hugh Puiset, bishop of Durham. Countless other instances of unwise bargains could be quoted. Having raised every penny that he could procure by legal or illegal means, Richard crossed the Channel, and embarked at Marseilles with a great army on the 7th of August 1190. The only security which he had for the safety of his dominions in his absence was that his most dangerous neighbour, the king of France, was also setting out on the Crusade, and that his brother John, whose shifty and treacherous character gave sure promise of trouble, enjoyed a well-merited unpopularity both in England and in the continental dominions of the crown.