It was only in the age of chivalry that valour could ascend from a private station to the thrones of Jerusalem and Constantinople. The titular kingdom of Jerusalem had devolved to Mary, the daughter of Isabella, and Conrad of Montferrat, and the grand-daughter of Almeric or Amaury. She was given to John of Brienne, of a noble family in Champagne, by the public voice, and the judgment of Philip Augustus, who named him as the most worthy champion of the Holy Land. Ref. 049 In the fifth crusade, he led an hundred thousand Latins to the conquest of Egypt; by him the siege of Damietta was achieved; and the subsequent failure was justly ascribed to the pride and avarice of the legate. After the marriage of his daughter with Frederic the Second, Ref. 050 he was provoked by the emperor’s ingratitude to accept the command of the army of the church; and, though advanced in life, and despoiled of royalty, the sword and spirit of John of Brienne were still ready for the service of Christendom. In the seven years of his brother’s reign Baldwin of Courtenay had not emerged from a state of childhood, and the barons of Romania felt the strong necessity of placing the sceptre in the hands of a man and a hero. The veteran king of Jerusalem might have disdained the name and office of regent; they agreed to invest him for his life with the title and prerogatives of emperor, on the sole condition that Baldwin should marry his second daughter and succeed at a mature age to the throne of Constantinople. Ref. 051 The expectation, both of the Greeks and Latins, was kindled by the renown, the choice, and the presence of John of Brienne; and they admired his martial aspect, his green and vigorous age of more than fourscore years, and his size and stature, which surpassed the common measure of mankind. Ref. 052 But avarice and the love of ease appear to have chilled the ardour of enterprise; his troops were disbanded, and two years rolled away without action or honour, till he was awakened Ref. 053 by the dangerous alliance of Vataces, emperor of Nice, and of Azan, king of Bulgaria. Ref. 054 They besieged Constantinople by sea and land, with an army of one hundred thousand men, and a fleet of three hundred ships of war; while the entire force of the Latin emperor was reduced to one hundred and sixty knights and a small addition of serjeants and archers. I tremble to relate that, instead of defending the city, the hero made a sally at the head of his cavalry; and that, of fortyeight squadrons of the enemy, no more than three escaped from the edge of his invincible sword. Fired by his example, the infantry and citizens boarded the vessels that anchored close to the walls; and twenty-five were dragged in triumph into the harbour of Constantinople. At the summons of the emperor, the vassals and allies armed in her defence; broke through every obstacle that opposed their passage; and, in the succeeding year, obtained a second victory over the same enemies. By the rude poets of the age, John of Brienne is compared to Hector, Roland, and Judas Maccabæus; Ref. 055 but their credit and his glory receives some abatement from the silence of the Greeks. Ref. 056 The empire was soon deprived of the last of her champions; and the dying monarch was ambitious to enter paradise in the habit of a Franciscan friar. Ref. 057
In the double victory of John of Brienne, I cannot discover the name or exploits of his pupil Baldwin, who had attained the age of military service, and who succeeded to the Imperial dignity on the decease of his adopted father. Ref. 058 The royal youth was employed on a commission more suitable to his temper; he was sent to visit the Western courts, of the pope more especially, and of the king of France; to excite their pity by the view of his innocence and distress; and to obtain some supplies of men or money for the relief of the sinking empire. He thrice repeated these mendicant visits, in which he seemed to prolong his stay and postpone his return; of the five-and-twenty years of his reign, a greater number were spent abroad than at home; and in no place did the emperor deem himself less free and secure than in his native country and his capital. On some public occasions, his vanity might be soothed by the title of Augustus and by the honours of the purple; and at the general council of Lyons, when Frederic the Second was excommunicated and deposed, his Oriental colleague was enthroned on the right hand of the pope. But how often was the exile, the vagrant, the Imperial beggar humbled with scorn, insulted with pity, and degraded in his own eyes and those of the nations! In his first visit to England he was stopt at Dover by a severe reprimand that he should presume, without leave, to enter an independent kingdom. After some delay, Baldwin, however, was permitted to pursue his journey, was entertained with cold civility, and thankfully departed with a present of seven hundred marks. Ref. 059 From the avarice of Rome he could only obtain the proclamation of a crusade, and a treasure of indulgences: a coin whose currency was depreciated by too frequent and indiscriminate abuse. His birth and misfortunes recommended him to the generosity of his cousin, Lewis the Ninth; but the martial zeal of the saint was diverted from Constantinople to Egypt and Palestine; and the public and private poverty of Baldwin was alleviated, for a moment, by the alienation of the marquisate of Namur and the lordship of Courtenay, the last remains of his inheritance. Ref. 060 By such shameful or ruinous expedients he once more returned to Romania, with an army of thirty thousand soldiers, whose numbers were doubled in the apprehension of the Greeks. His first despatches to France and England announced his victories and his hopes; he had reduced the country round the capital to the distance of three days’ journey; and, if he succeeded against an important though nameless city (most probably Chiorli), Ref. 061 the frontier would be safe and the passage accessible. But these expectations (if Baldwin was sincere) quickly vanished like a dream; the troops and treasures of France melted away in his unskilful hands; and the throne of the Latin emperor was protected by a dishonourable alliance with the Turks and Comans. To secure the former, he consented to bestow his niece on the unbelieving sultan