Xerchan, or Shir Khan, a general of note among the Moguls, being in disgrace with the padisbah or Great Mogul, fled from Delhi to Bengal accompanied by his brother Hedele Khan, and both of them rose to eminent rank in the service of Mahomet. Being now at the head of a large army, Shir Khan resolved to avenge upon Mahomet the murder of the former infant king of Bengal; for which purpose he revolted with his army to Humayun the Mogul padishah, and turned his arms against Mahomet. In his distress, Mahomet consulted with Martin Alfonso how best to oppose the arms of Shir Khan. By his advice, some vessels commanded by Portuguese were stationed in the Ganges at a pass near the fort of Gori where the Ganges enters Bengal. These effectually barred the passage of Shir Khan in that direction; but having discovered another ford, he advanced to Gowro, which he invested with 40,000 horse, 200,000 foot, and 1500 elephants. Shir Khan likewise brought a fleet of 300 boats down the river, to a place where Mahomet had 800 boats to oppose the enemy. At this place Duarte de Brito did signal service in the sight of King Mahomet, and among other things, accompanied by eight other Portuguese, he took an elephant that was swimming across the river. The city of Gowro being reduced to distress by the besiegers, Mahomet bought a peace, and Shir Khan drew off with his army. Being now as he thought in safety, Mahomet allowed Martin Alfonso to depart with the other Portuguese, only retaining five as hostages for the assistance he had been promised by Nuno.

Shir Khan returned soon afterwards to Gowro, which he took by assault, obliging the king, who was wounded in the assault, to abandon the city. Mahomet died of his wounds on his way to ask assistance from Humayun. Shir Khan drew off from Gowro, where he acquired treasure to the amount of 60 millions in gold. Humayun brought the dead body of King Mahomet to Gowro, where he appointed his own brother-in-law Mir Mahomet Zaman to the vacant kingdom, who had been lately driven from Guzerat. But on the return of Humayun towards Delhi, Shir Khan returned to Gowro and drove out Mahomet Zaman. Humayun then marched against Shir Khan with 100,000 horse and 150,000 foot, with above 200,000 followers. The two armies met on the banks of the Ganges near the city of Kanoje when Shir Khan gained so complete a victory that Humayun made his escape with only 25 attendants, and never stopt till he arrived at Lahore. Shir Khan treated the women belonging to Humaynn with great respect, and restored them to the padishah. Finding himself too weak for the conquest of Bengal, Humayun determined upon endeavouring to reduce Guzerat; but abandoned in his distress by his own Omrahs, he went into Persia, where the Sophi supplied him with an army of 12,000 horse, to which he was enabled to add 10,000 volunteers. With these allies, added to the troops that continued to adhere to him, he invested Candahar, where his brother Astarii Mirza had proclaimed himself king of Mogostan. The city was taken and given up to the Persians. In the mean time Shir Khan made himself formidable in Bengal, having an army of 400,000 horse. He took the city of Calijor belonging to the Rajputs, meaning to plunder a vast treasure contained in the temple at that place; but pointing a cannon to kill an elephant belonging to the temple, the piece burst and killed himself.

The present formerly mentioned, which was sent by the king of Guzerat to the Grand Turk to obtain his assistance, was delivered at Constantinople, where at the same time arrived news of the kings death. But the great value of the present demonstrated the vast riches of India, and made the Turkish emperor desirous of acquiring a footing in that country, whence he thought the Portuguese might be easily expelled, and their possessions reduced under his dominion. In this enterprise he was greatly encouraged by a Portuguese renegado at Constantinople, who asserted that the Turkish power might easily supplant that of the Portuguese in India. For this purpose, the Turkish emperor ordered a fleet to be fitted out at Suez, the command of which was given to the eunuch Solyman Pacha, governor of Cairo. Solyman was a Greek janizary born in the Morea, of an ugly countenance, short of stature, and had so large a belly that he was more like a beast than a man, not being able to rise up without the aid of four men. At this time he was eighty years of age, and he obtained this command more by dint of his wealth than merit, as he offered to be at the entire charge of the expedition. To enable him to perform this, he put many rich men to death and seized their wealth. Among others he strangled Mir Daud, king or bey of the Thebaid, and seized his treasure. It might be said therefore that this fleet was equipped rather by the dead than the living. It consisted of 70 sail, most of them being large gallies, well stored with cannon, ammunition, and provisions; on board of which he embarked 7000 soldiers, part Turkish janizaries and part Mamelukes; besides a great number of choice sailors and galley-slaves, many of the latter being taken from the Venetian gallies then at Alexandria, which were seized in consequence of a war breaking out between the Turks and the republic of Venice.

Solyman, who was both a tyrant and a coward, set out from Suez on the 22d of June 1538, ordering four hundred of the soldiers to assist at the oars, and as they resisted this order as contrary to their privileges, he put two hundred of them to death. At Jiddah he endeavoured to take the sheikh, but knowing his tyrannical character, he escaped into the interior. At Zabid, after receiving a rich present, he put the sheikh to death. He did the same thing at Aden; and arrived at Diu about the beginning of September 1538, losing six of his vessels by the way.

When Badar king of Guzerat was killed, one Khojah Zofar swam on shore and was well received by the Portuguese, being the only one of the kings retinue who was saved on that occasion. For some time he seemed grateful for his safety; but at length fled without any apparent reason to the new king of Guzerat, to whom he offered his services, and even endeavoured to prevail upon him to expel the Portuguese from his dominions, asserting that this might be easily done with the assistance of the Turks. By his instigation, the king of Guzerat raised an army at Champaneer of 5000 horse and 10,000 foot, to which Khojah Zofar added 3000 horse and 4000 foot in his own pay. Getting notice of these preparations, Antonio de Sylveira who commanded in Diu, used every precaution to provide against a long and dangerous siege. Khojah Zofar began the war by attacking the town of the Rumes208 near Diu. Francisco Pacheco defended himself bravely in a redoubt at the place, with only fourteen Portuguese, till relieved by Sylveira, and Zofar was forced to draw off his troops, being himself wounded. Immediately afterwards Ali Khan, general of the Guzerat army, joined Zofar with all the army, and Sylveira thought proper to evacuate all the posts beyond Diu, that he might be able to maintain the city and fort; but some vessels and guns were lost in the execution of these orders. In consequence of these losses, and because there were many concealed enemies in the city who only waited an opportunity of doing all the evil in their power to the Portuguese, Sylveira deemed it expedient to evacuate the city, giving his sole attention to the defence of the fort. Ali Khan and Zofar immediately took possession of the city, and began to fire upon the fort with their cannon. Lope de Sousa, who guarded the wood and water belonging to the garrison, had several rencounters, in which he slew many of the enemy without any loss on his side, except being himself severely wounded.

Hearing that the Turkish fleet was approaching, Sylveira sent immediate notice of it to Nuno de Cuna, who prepared with great diligence to go in person to relieve Diu. Michael Vaz was sent to sea by Sylveira to look out for the enemy, and falling in with their fleet came so near on purpose to examine their force that several of their shot reached his vessel. He got off however, and carried the news to the governor of Goa. The Turkish fleet came at length to anchor in the port of Diu, where it was formidable not only to the small Portuguese garrison in the fort, but to the Moors even who had long expected their arrival. Next day Solyman landed 600 well armed janizaries, who immediately entered the city and behaved with much insolence. Drawing near the fort, they killed six Portuguese; but 300 musqueteers attacked them from the fort and drove them away with the loss of fifty men. In consequence of a storm, Solyman was obliged to remove his fleet to Madrefavat, as a safer harbour, where he remained twenty days, during which time Sylveira was diligently occupied in strengthening the fortifications of the castle, planting his artillery on the ramparts, and assigning every one his proper post for the ensuing siege. At the same time, the Turks assisted by Zofar commenced operations against the fort, by constructing batteries, and endeavouring to ruin the defences of a bulwark at the entrance of the harbour, which they battered with their cannon. With this view likewise, they built a wooden castle on a large bark, which, they filled with combustibles, meaning to send it against the bulwark to set it on fire. But Francisco de Gouvea, who commanded the small naval force then at Diu, went against this floating castle under night, and contrived to destroy it by fire. At this time likewise some relief was sent to the fort by Nuno de Cuna, and the garrison was much elated by the assurance of his intention of coming speedily in person to raise the siege.