Upper Canada was settled almost wholly by United Empire Loyalists who had left their homes in the revolted colonies and kept their faith to the Crown. Many of them brought their slaves as well as their other property to the new land. The statute of 1790 encouraged this practice.[4]

The first Lieutenant-Governor of Upper Canada was Col. John Graves Simcoe. He hated slavery and had spoken against it in the House of Commons in England. Arriving in Upper Canada in the summer of 1792, he was soon made fully aware by the Chloe Cooley case that the horrors of slavery were not unknown in his new province. There came up to the Executive Council the complaint that a Negro girl thus named had been cruelly forced across the border and sold in the United States by one Vroomen. Much indignation was expressed by both citizens and officials.

The Attorney-General was John White[6] an English lawyer of no great eminence indeed but of sufficient skill to know that the brutal master was well within his rights in acting as he did. He had the same right to bind, export, and sell his slave as to bind, export, and sell his cow. Chloe Cooley had no rights which Vrooman was bound to respect; and it was no more a breach of the peace than if he had been dealing with his heifer. Nothing came of the direction to prosecute and nothing could be done unless there should be an actual breach of the peace.

It is probable that it was this circumstance which brought about legislation. At the second session of the First Parliament which met at Newark, May 31, 1793, a bill was introduced and unanimously passed the House of Assembly. The trifling amendments introduced by the Legislative Council were speedily concurred in, the royal assent was given July 9, 1793, and the bill became law.[7]

Simcoe, as was his duty, reported to Henry Dundas afterwards Lord Melville, Secretary of State for the Home Department concerning this Act September 28, 1793. Simcoe had discovered that there was much resistance to the slave law. There were many plausible arguments of the demand for labor and the difficulty of obtaining "Servants to cultivate Lands." "Some possessed of Negroes," said he, "knowing that it was very questionable whether any subsisting Law did authorize Slavery and having purchased several taken in war by the Indians at small prices wished to reject the Bill entirely; others were desirous to supply themselves by allowing the importation for two years. The matter was finally settled by undertaking to secure the property already obtained upon condition that an immediate stop should be put to the importation and that Slavery should be gradually abolished."[8]

The Act recited that it was unjust that a people who enjoy freedom by law should encourage the introduction of slaves, and that it was highly expedient to abolish slavery in the province so far as it could be done gradually without violating private property. It repealed the Imperial Statute of 1790 so far as it related to Upper Canada, and to enact that from and after the passing of the act "No Negro or other person who shall come or be brought into this Province ... shall be subject to the condition of a slave or to bounden involuntary service for life." With that regard for property characteristic of the English-speaking peoples, the act contained an important proviso which continued the slavery of every "negro or other person subjected to such service" who had been lawfully brought into the province. It then enacted that every child born after the passing of the act, of a Negro mother or other woman subjected to such service, should become absolutely free on attaining the age of twenty-five, the master in the meantime to provide "proper nourishment and cloathing" for the child, but to be entitled to put him to work, all issue of such children to be free whenever born. It further declared that any voluntary contract of service or indenture should not be binding longer than nine years. Upper Canada was the first British possession to provide by legislation for the abolition of slavery.[9]

It will be seen that the statute did not put an end to slavery at once. Those who were lawfully slaves remained slaves for life unless manumitted and the statute rather discouraged manumission, as it provided that the master on liberating a slave must give good and sufficient security that the freed man would not become a public charge. But, defective as it was, it was not long without attack. In 1798, Simcoe had left the province never to return, and while the government was being administered by the timeserving Peter Russell,[10] a bill was introduced into the Lower House to enable persons "migrating into the province to bring their negro slaves with them." The bill was contested at every stage but finally passed on a vote of eight to four. In the Legislative Council it received the three months' hoist and was never heard of again.[11] The argument in favor of the bill was based on the scarcity of labor which all contemporary writers speak of, the inducement to intending settlers to come to Upper Canada where they would have the same privileges in respect of slavery as in New York and elsewhere; in other words the inevitable appeal to greed.

After this bill became law, slavery gradually disappeared. Public opinion favored manumission and while there were not many manumissions inter vivos[12] in some measure owing to the provisions of the act requiring security to be given in such case against the free man becoming a public charge, there were not a few emancipated by will.[13]