Alfred Guy Vuozzo , 46 , shot dead Brent McGuigan and his son , Brendon . He carried out shooting last August to avenge nine-year-old sister , Cathy . Cathy was killed in a car smash involving Brent 's father , Herbert , in 1970 . Herbert given nine-month sentence for dangerous driving ; has since died . Vuozzo , from Prince Edward Island , said the sentence had 'haunted ' him . Knew victims , who lived near Montague , were not involved in fatal crash . Defendant pleaded guilty to first- and first-degree murder in February . He was jailed for life on Monday ; he is not eligible for parole for 35 years .
Alfred Guy Vuozzo , 46 , shot dead Brent McGuigan and his son , Brendon . He carried out shooting last August to avenge nine-year-old sister , Cathy . Cathy was killed in a car smash involving Brent 's father , Herbert , in 1970 . Herbert given nine-month sentence for dangerous driving ; has since died . Vuozzo , from Prince Edward Island , said the sentence had 'haunted ' him . Knew victims , who lived near Montague , were not involved in fatal crash . Defendant pleaded guilty to first- and second-degree murder in February . He was jailed for life on Monday ; he is not eligible for parole for 35 years .