HART, or HEART, Jonathan, soldier, born in Kensington, Connecticut, in 1748; died on Miami river, Ohio, 4 November, 1791. His father, Ebenezer Hart, was one of the first settlers in Connecticut. Jonathan was graduated at Yale in 1768, went to Farmington in 1773, and engaged in business. He enlisted as a private soldier in the Continental army at the beginning of the Revolution. and served throughout the struggle as a member of the 1st Connecticut regiment, attaining the rank of captain. When peace was established he engaged in surveying, and in 1785 was appointed captain of the 1st United States infantry. He was stationed on the western frontier, and served in the Indian campaigns under General Charles Scott and General Josiah Harmar. In 1791 he was appointed major of the 2d infantry, and accompanied General Arthur St. Clair's expedition against the Miami Indians. Major Hart commanded the regular troops in the disastrous battle of 4 November, 1791, near the source of Miami river, and while covering the retreat with the shattered remnant of the army, was ordered to charge with the bayonet. In performing this duty he and nearly all his command were killed. He published in the transactions of the American society (vol. iii.)" The Native Inhabitants of the Western Country," and a paper on "The Ancient Works of Art."