 Governor Ninian Edwards demanded that the Potawatomis surrender the raiders, but chief Gomo informed U.S. officials that the raiders had gone to Prophetstown in Indiana, headquarters of the anti-American resistance movement led by the Shawnee Prophet and his brother Tecumseh.Along with chiefs Shabbona and Waubonsie, Winamac led the Potawatomi contingent against the Americans at the Battle of Tippecanoe at Prophetstown in 1811.Winamac began the organization for the 1812 siege of Fort Wayne.