During the War of 1812, General William Hull ordered the evacuation of Fort Dearborn in August 1812. Heald oversaw the evacuation, but on August 15 the evacuees were ambushed by about 500 Potawatomi Indians in the Fort Dearborn Massacre. The Potawatomi captured Heald and his wife, Rebekah, and ransomed them to the British. Of the 148 soldiers, women and children who evacuated the fort, 86 were killed in the ambush. The Potawatomi burned the fort to the ground the next day.
Death of Ensign Ronan – page 56
Interesting history inline below
Listing of Killed –