The Provincial Archives of New Brunswick has several death databases that cover a wide time span. (see: PANB)
County Register of Deaths Returns provide: name of deceased, residence, date and place of death, sex and age, occupation, place of birth, religious denomination, cause of death, duration of illness, name of attending physician and informant 
Date: 1888           film number PANB F13640 
Date: 1888-1919  film number PANB F16255 
Index to Death Certificates  1920-1951
Index to Death Registration of Soldiers, 1941-1947