Obviously you are being sarcastic, but Dred Scott was held as a slave within the present-day boundaries of Minnesota for a time. He lost his lawsuit but gained his freedom before the Civil War began.
but he was brought in from another state and was ‘legal’ only after the decision named after him. Slavery was not legal under the Northwest Ordinance, for parts of Minnesota were from the old Northwest Territory and the Missouri compromise. And Minnesota did not become a state until 1858.
And, they named a softball complex after him in Bloomington!