Mr Sharp's early conflicts in the law-courts are more romantic than the last and decisive one. He and his brother had found a poor mendicant negro, called Jonathan Strong, in rags on the streets of London. They took him into their service, and after he had become plump, strong, and acquainted with his business, the man who had brought him from the colonies, an attorney, seeing him behind a carriage, set covetous eyes on him. The lad was waylaid on a false message to a public-house, seized, and committed to the Compter, where, however, he managed to make Mr Sharp acquainted with his position. The indefatigable philanthropist had him brought before the lord mayor as sitting magistrate. After hearing the case stated, his lordship said: 'The lad had not stolen anything, and was not guilty of any offence, and was therefore at liberty to go away.' A captain of a vessel, saying he had been employed by a person who had just bought the youth, to convey him to Jamaica, seized him by the arm as his employer's property. A lawyer standing behind Mr Sharp, who seems to have been puzzled how to proceed, whispered, 'Charge him.' Sharp charged the captain with an assault, and as he would have been immediately committed by the lord mayor if he persisted, he let go his hold. The philanthropist was threatened with a prosecution for abstraction of property, but it was abandoned. This occurred in 1767. The next important case was that of a negro named Lewis. He 'had formerly,' says Mr Sharp's biographer, 'been a slave in possession of a Mr Stapylton, who now resided at Chelsea. Stapylton, with the aid of two watermen, whom he had hired for that purpose, in a dark night seized the person of Lewis, and, after a struggle, dragged him on his back into the water, and thence into a boat lying in the Thames, where, having first tied his legs, they endeavoured to gag him by running a stick into his mouth; and then rowing down to a ship bound for Jamaica, whose commander was previously engaged in the wicked conspiracy, they put him on board, to be sold as a slave on his arrival in the island.' The negro's cries, however, were heard; the struggle was witnessed; and information given in the quarter whence aid was most likely to come. Mr Sharp lost no time in obtaining a writ of habeas corpus. The ship in the meantime had sailed from Gravesend, but the officer with the writ was able to board her in the Downs. There he saw the negro chained to the mast. The captain was at first furious, and determined to resist; but he knew the danger of deforcing an officer with, such a writ as a habeas corpus, and found it necessary to yield. The writ came up before Lord Mansfield. He did not go into the general question of slavery, for there was an incidental point on which the case could be decided on the side of humanity--the captain and the persons employing him could not prove their property in the slave, supposing such property lawful.