wmck2 is indicating that he has found the Reverend's death certificate online at the Nova Scotia Historical Vital Statistics website. If you go to
https://www.novascotiagenealogy.com and look for the death of Edward Kennedy in 1917, you will be linked to a record for his death.
Edward Kennedy lived in Truro, Nova Scotia, but died in Halifax, about 100 km away, at the Halifax infirmary on 14 Apr 1917. It says he was born in Ireland, was a roman catholic clergyman, and had lived in his current residence for about three years. Cause of death was arterial sclerosis; his age was 80. He was buried in Holy Cross Cemetery in Halifax.
The catholic cemeteries of Halifax website (
http://www.ccchalifax.com/) claims his age as 81, and confirms that he was a priest from Ireland.
You can try looking in the census if you suspect he was here longer than 3 years (Canadian censuses were conducted every ten years, so the 1911 and 1901 censuses would be your go-to spots).
I would say your next step should be to look for an obituary in the Halifax Herald or Halifax Chronicle. If you are far away, you can either ask someone here for a lookup, or contact the current Halifax Chronicle-Herald newspaper (they merged) - they will do obituary lookups for a fee, usually under $15.
If you're really interested in putting extra effort in, the Truro Daily News (1891) or a catholic newspaper might have more detail; a city directory might also help - however you would most likely have to go to the Nova Scotia Archives to get access to either of these three. A book called "Every Popish Person" give the history of Roman Catholicism in Nova Scotia and might have some information. If you can determine the parish he served in, perhaps there is a parish history that might have some information on him.
You could also contact the catholic archdiocese responsible for the area to determine if they have any information (
http://www.halifaxyarmouth.org/archdiocesan-offices/archives)
Good luck,
ns02134