Shortly after this Ouilmette and his family moved to a cabin on this reservation. Ouilmette was also involved with the 1833 Treaty of Chicago negotiations. This treaty not only provided provisions for Chief Robinson and Billy Caldwell, Ouilmette's children, and others but it secured $800 for Ouilmette.Grover, Antoine Ouilmette, pp. 16. Like Alexander Robinson, Billy Caldwell, and several of the Beaubiens, Ouilmette was Roman Catholic. In April 1833, he and they (and others), petitioned the Bishop of the diocese of Missouri, located in St. Louis, asking for permission to establish the first Catholic church in Chicago. Received on 16 April, the petition was granted the next day.Grover, Antoine Ouilmette, pp.9
