The hanging of Patrick O'Connor happened on June 20, 1834, in Dubuque, Michigan Territory, to a man convicted in Iowa's first murder trial.
[1] After leaving Galena, O'Connor traveled to Dubuque, Michigan Territory, to work in the lead mines.
On May 19, 1834, O'Keaf traveled to Dubuque to gather supplies and returned with one of his friends near 2 pm.
After the arguments from the defense and prosecution, the jury found O'Connor was guilty of first degree murder.
The governor of Missouri said he did not have the power to grant a pardon and President Andrew Jackson said that "Congress had not extended the laws of the United States to that part of the country".
This ensured the beneficiaries of the Black Hawk Purchase would have the authority and protection of the United States.