Explanation: In his eagerness to go crusading in the Holy Land, King Richard I of England, sometimes known as Richard the Lionheart, sold off a great deal of the English crown's property to finance the military expedition. Supposedly, he even said, as an aside, that he would have sold London itself if only he could find a buyer.
... considering his other sales, he may not have been entirely joking.
Rather than being filled with pious fervor, Richard the Lionheart was about average in terms of religious conviction for the time. He actually even mused marrying off one of his relatives to a male relative of the great Muslim leader Saladin, whom he admired greatly (after fighting him a few times), to create a united and somewhat pluralist kingdom in the Levant, though this plan eventually fell through. His true passion for the Third Crusade was his love of battle. Richard was noted as a warrior who liked to be in the heat of combat, fighting personally; and yet had a sharp mind for tactics and logistics as well.