there is another page under see casualty records, on the same site I gave you.
Dennis Cannon, Mercantile Marine, death 21.1.1915, son of J. Cannon from Meenacurrin, Lettermacaward age 31, Fireman
picture of grave on this site. but does not say if it is Dennis Cannon grave?
he down under british that does not mean he might have change to US.