242 THE BOY CRUSADERS. overran Russia, ravaged Poland, desolated Hun- gary, devastated the frontiers of Germany, and caused such dread, that even England was agi- tated with the danger that threatened all Christen- dom. About the year 1245, however, Mango, the grand- son of Gheniskhan, professed a desire to embrace Christianity; and Oulagon, the brother of Mango, espoused a Christian woman; and, when King Louis was wintering in Cyprus, ambassadors from Tartary reached the island, with messages to the effect that the great khan had been baptised, and that he would readily aid the Crusaders in rescuing Jerusalem from the Moslems. The saint-king received the ambas- sadors with joy, entertained them hospitably, con- ducted them to church, and, when they departed, sent two monks with magnificent presents to the great khan, and exhortations to hold fast the pro- fession of his faith without wavering. Even when the Tartars menaced Bagdad, an ambassador, des- patched by King Lovis from Acre, was at the court of the great khan. with the object of converting the Tartars; and it appears clear that, however little they might care for either faith, the Tartars, in the struggle of Christian and Moslem in the East, were ever ready to take the side of the Christian against the Moslem. Such being the state of affairs, Mango sent his brother with an army to besiege Bagdad; and Oulagon, raising his banner, marched towards the city of the ea Now it happened that Musteazem, being at once under the influence of the most egTe-