Henry of Flanders, the brother of Baldwin, became [pg 296] his successor. He was an honest and able man, but he could do nothing towards conquering the provinces of Asia, pushing the Bulgarians back over the Balkans, or conciliating the subject Greek population. All his reign he had to fight on the defensive against his neighbours to the north and south. By the time that he died the empire was practically confined to a narrow slip of land along the Propontis, reaching from Gallipoli to Constantinople. Nor was the chief of the minor Latin states any better off; Boniface of Montferrat had fallen in 1207, slain in battle by the same Bulgarian hordes which had cut off the army of his suzerain Baldwin. With his death it became evident that the kingdom of Thessalonica was no more able to conquer all the old Byzantine provinces in its neighbourhood than was the empire of Constantinople. Boniface's son and heir was a mere infant; during his minority the lands of his kingdom were lopped away, one after another, by the Greek despot of Epirus, the able Theodore Angelus. At last the capital itself was retaken by the Greeks in 1222, and the kingdom of Thessalonica came to an end.
The Latin states in the southern parts of the Balkan Peninsula fared somewhat better. William of Champlitte had contrived to hew out for himself a principality in the western parts of the Peloponnesus, and had organized there a small state with twelve baronies and 136 knights fees. The resistance of the natives in this district was particularly weak, and one battle sufficed to give William all the coast-plain of Elis and Messenia. Yet he did not succeed in [pg 297] subduing the mountaineers of the peninsula of Maina, or the coast towns of Argolis and Laconia, so that the Greeks still had some foothold in the peninsula.
Another small Latin state was set up by Otho de la Roche in Central Greece, where as “Duke of Athens” he ruled Attica and Boeotia. He treated his Greek subjects with more consideration than any of his fellow Crusaders, and was rewarded by obtaining a degree of respect and deference which was not found in any other Latin state. Though the smallest, the duchy of Athens was undoubtedly the most prosperous of the new creations of the conquest of 1204.
Meanwhile it is time to speak of the fortunes of those parts of the Eastern Empire which the Franks did not succeed in seizing when Constantinople fell. The provinces had hitherto been accustomed to accept without a murmur the ruler whom the capital obeyed. But in 1204 it was found that the centralization of the Byzantine Empire, great as it was, had not so thoroughly crushed the individuality of the provinces as to make them submit without resistance to the Latin yoke. Wherever the provincials found a leader, whether a member of one of the ex-imperial houses, or an energetic governor, or a landholder of local influence, they stood up to defend themselves. The Byzantine Empire, like some creature of low organism, showed every sign of life in its limbs, though its head had been shorn off. Wherever a centre of resistance could be found the people refused to submit to the piratical Frank, and to his yet more hated companions the priests of the Roman Church.
Of the nine or ten leaders who put themselves at the head of provincial risings three were destined to carve out kingdoms for themselves. Of these the most important was Theodore Lascaris, the last officer who had attempted to strike a blow against the Franks when Constantinople fell.[30] He might claim some shadow of hereditary right to the imperial crown as he had married the daughter of the imbecile Alexius III., but his true title was his well-approved courage and energy. The wrecks of the old Byzantine army rallied around him, the cities of Bithynia opened their gates, and when the Latins crossed into Asia to divide up the land into baronies and knights fees, they found Theodore waiting to receive them with the sword. His defence of the strong town of Prusa, which successfully repelled Henry of Flanders, put a limit to the extension of the Frank Empire; beyond a few castles on the Bithynian coast they made no conquests. Having thus checked the invaders, Theodore had himself solemnly crowned at Nicaea, and assumed imperial state [1206].
Finial From A Byzantine MS. (From "L'Art Byzantin." Par C. Bayet. Paris, Quantin, 1883.)
Having beaten off the Latins, Theodore had to cope with another who aspired like himself to pose as the rightful heir to the imperial throne. Alexius Comnenus, a grandson of the wicked emperor Andronicus I., had betaken himself to the Eastern frontiers of the empire when Constantinople fell, and obtained possession of Trebizond and the long slip of coast-land at the south-east corner of the Black Sea, from the mouth of the Phasis to Sinope. He aspired to conquer the whole of Byzantine Asia, and sent his [pg 299] brother David Comnenus to attack Bithynia. But Theodore defended his newly won realm with success; Comnenus gained no territory from him, and was constrained to content himself with the narrow bounds of his Pontic realm, where his descendants reigned in obscurity for three hundred years as emperors of Trebizond. A greater danger beset the empire of Nicaea when the warlike sultan of the Seljouks came down from his plateau to ravage its borders. But the valour of Theodore Lascaris triumphed over this enemy also. In the battle of Antioch-on-Maeander he slew Sultan Kaikhosru with his own hand in single [pg 300] combat, and the Turks were beaten back with such slaughter that they left the empire alone for a generation.
Meanwhile a third Greek state had sprung into existence in the far West. Michael Angelus, a cousin of Alexius III. and Isaac II., put in a claim to their heritage, though he was disqualified by his illegitimate birth. He was recognized as ruler by the cities of Epirus, and proclaimed himself “despot” of that land. Raising an army among the warlike tribes of Albania, he maintained his position with success, and discomfited the Franks of Athens and Thessalonica when they took arms against him. He died early, but left a compact heritage to his brother Theodore, who succeeded him on the throne, and within a few years conquered the whole of the Frank kingdom of Thessalonica.
It was soon evident that there would be a trial of strength between the two Greek emperors who claimed to succeed to the rights of the dispossessed Angeli. The Latin Empire was obviously destined to fall before one of them. The only doubt was, whether the Epirot or the Nicene was to be its conqueror. This question was not settled till 1241, when the two powers met in decisive conflict.