He served in the 3rd Regiment of the Lincoln Militia during the 1837 Upper Canada Rebellion.
He was reportedly murdered by Benjamin Lett on the front step of his home, Milford Lodge, for his participation in the destruction of the American vessel steamer Caroline.
Edgeworth Ussher was shot to death at the door of his home in November 1838.
[1] He was buried at Drummond Hill Cemetery in Niagara Falls, Ontario.
Inscription on his tombstone: Here rests in the hope of a joyful resurrection the mortal remains of Edgeworth Ussher, Esq., whose devotion to his sovereign and exertions in the cause of his country at a critical period in the history of Canada marked him out as an object of the vengeance of the enemies of peace and good order, by whom he was cruelly assassinated on the night of 16 Nov., 1838, in his own house near Chippawa, at the early age of 34 years, leaving a wife and four children to mourn their irreparable loss.