In Shanley v Harvey (1763) 2 Eden 126, a claim was instituted by Shanley as administrator of the estate of his deceased niece.
Shanley had brought Harvey as a child slave, to England, 12 years earlier and had given him to his niece. She had him baptised and had changed his name. She became very ill and about an hour before her death, she gave Harvey about £800 in cash (a substantial sum in those days), asked him to pay the butcher's bill and to make good use of the money. After her death, Shanley brought an action against Harvey to recover the money.
Lord Henley, the Lord Chancellor, dismissed the action, with costs against Shanley. In his judgment he held that as soon as a person set foot on English soil, he or she became free and that a "negro" might maintain an action against his or her master for ill usage, together with an application for habeas corpus if detained. However, such comments were not necessary for the decision in the case, and in law were only obiter dictum and not binding on subsequent courts.
Read more about this topic: Slavery At Common Law