This should be your Ann MacDonell:
Grant, Ann Petition No.44 (5th section) Charlottenburgh
14 January 1801
Charlottenburgh, daughter of Donald MacDonell late of the KRRNY, killed in service, a UE Loyalist, was a Corporal in the 1st Batt KRRNY and killed in the expedition against Fort Stanwix under Brig. Gen. St. Leger in year 1777. She is a married woman.