Be the pretender who he may, no sooner did he emerge from obscurity than he obtained allies and adherents only too willing to share in the promised plunder of an empire. Joined by the Prince of Walachia, and by Djouneid, Governor of Nicopolis, whom the too generous Sultan Mohammed had already twice pardoned for rebellion, the claimant invaded Thessaly. Defeated and put to flight in the neighbourhood of Salonica, he took refuge in that city, putting himself under the protection of the Greek commandant, who justified his confidence by refusing to give him up to the vengeance of his conquerors. The Emperor Emanuel highly approved of the commandant's conduct, and to the request of his powerful neighbour, the Sultan, that he should surrender the fugitive, responded that no monarch could act so shamelessly as to deliver up a prince who sought an asylum at the foot of his throne. He promised, however, that during the lifetime of Mohammed, the soi disant Mustapha should not be permitted to leave the Greek court. The Sultan contented himself with this promise of the Emperor, and agreed to pay a pension of three hundred thousand astres* to the pretender; thus, it has been pointed out, tacitly recognizing him as of the royal blood. The Governor Djouneid and thirty of his companions were included in the treaty of pardon, but Mohammed invaded and ravaged the dominions of the Prince of Walachia, in revenge for the aid he had afforded the rebels.

* A Turkish coin value half-a-crown.

The following year Mohammed the First was struck with apoplexy, and died suddenly, leaving his empire, as before stated, to his son, Amurath the Second. The new ruler immediately advised the neighbouring princes of his accession to the Turkish throne, entering into alliances, and making truces or treaties of peace with such as had been hostile to the Ottoman power. All but the Greek Emperor appeared to be friendlily disposed, and he, doubtless thinking to take advantage of the new monarch's youth, instantly summoned Amurath to place his brothers in his hands, as hostages for the performance of some clause in his father's testament. Emanuel, moreover, threatened the youthful Sultan that unless he complied with the demand, he would release Mustapha, his uncle, the legitimate heir to the Turkish throne, and assist him by force of arms to recover his usurped rights.

Amurath's clever minister refused the demand with indignation, asserting that the law of the prophet did not permit the children of true believers to be brought up amongst ghiaours.* The Greek Emperor, true to his menace, and all unmindful of the dangerous vicinity of the Ottoman dominions to his own, set the pretender free, and gave him every requisite for the commencement of his dangerous adventure, upon condition that he made over Gallipoli, and several other towns, to the Greeks.

* Infidels; literally, dogs.

Thus befriended, the royal claimant, accompanied by ten galleys containing his followers and adherents, proceeded to Gallipoli, where he no sooner disembarked than the town and suburbs acknowledged his pretensions, only the garrison of the fortress holding out. Leaving a small besieging force before the town, he made rapid marches towards the Isthmus of Athos, his army increasing rapidly as he proceeded, and several places falling into his hands. The Sultan sent his Vizier to Adrianople, where he collected an army of thirty thousand men, with which to oppose the invaders. Several great vassals of the empire having now declared for Mustapha, he was quite prepared to face the imperial army, and as soon as it came in view he advanced courageously towards it, and commanded the troops to lay down their arms. As if by magic, says one historian, the soldiers obeyed, and the pretender suddenly found himself master of the situation without having to lose a single man. The unfortunate Vizier and his brother were captured; the former was put to death, but the latter released.

On receipt of this intelligence the fortress of Gallipoli capitulated, and Demetrius, the commander of the Greek forces, was about to garrison it with his soldiers when Mustapha interposed, and, unmindful of his treaty with Emanuel, said that he was not making war for the Emperor's profit. The Greeks, thus beholding all their hopes of aggrandizement dissipated, sought to renew their alliance with the Sultan, but their monarch obstinately persisting in his demand for Amurath's brothers being placed in his hands as hostages, the negotiations fell through.

As soon as the Ottoman sovereign learnt the defection of his army, he energetically set to work to collect another, and to obtain the aid of surrounding nations. Encouraged by the promise of victory given him by the saintly Emir of Bokhara, he proceeded with his hastily improvised forces to meet the rebels, ultimately taking up a strong position behind the river Ouloubad. Mustapha, on his side, was advancing quickly to give battle, when he was suddenly seized with a violent bleeding at the nose, which weakened him so much that for three days he was compelled to suspend the attack. The delay was fatal to him. Taking advantage of the respite, emissaries of Amurath penetrated into the hostile ranks, and persuaded large numbers of soldiers and officers to return to their former master, whilst the Arabs, who remained faithful to Mustapha, having attempted to surprise the imperial troops, were cut into pieces by the Janissaries. Djouneid, the thrice-dyed traitor, seeing how matters were going, still further injured the pretender's cause by passing over to the enemy with all his followers. Believing themselves abandoned by their chiefs, the soldiers fled in all directions in disorder, leaving their unfortunate leader in the company of a few servants. He took refuge in Gallipoli, but seeing the fleet of his fortunate rival approaching to besiege the place, he resumed his flight, and took shelter in Walachia. Betrayed, however, by some of his personal attendants, he was seized, taken to Adrianople, and put to death, having been hanged, according to some accounts, from the battlements of the city walls.

When the defeat and death of Mustapha was communicated to the Greek Emperor, he began to fear for himself. He despatched ambassadors to the Sultan to make protestations of his friendship, and to leave no stone unturned to avert his wrath. His efforts were useless: at the head of twenty thousand men, Amurath, aided by a Genoese fleet, crossed over to Europe, and advancing to the walls of Constantinople, besieged Emanuel in his capital. Encouraged by the presence and prophecies of the Emir of Bokhara, the Mussulmans were impatient for the assault on the world-famed city. After long meditations, the holy man solemnly proclaimed that at one hour after midday of the 24th of August, 1422, he should mount his steed, and thrice waving his scimitar, and thrice giving the war-cry of "Allah and his prophet," the Mohammedans were to advance, and the city would be theirs.

Accordingly, on the day and the hour promised, the Emir, mounted on a magnificent charger, and escorted by five hundred dervishes, advancing towards the beleaguered city, gave the anticipated signal; his words were caught up and thrice repeated by the whole invading army. Uttering defiant war-cries, the Greek soldiery advanced, and in a short time both armies were hotly engaged. And now was beheld one of the most wonderful phenomena recorded in the annals of nations, but which is, unfortunately, so differently stated by the Christian and Mohammedan chroniclers, that it is difficult to reconcile the two versions; the better way will be, doubtless, to believe neither.