▁Valley ▁mass acre . ▁The ▁name ▁of ▁Butler ▁was ▁there after ▁an ath ema ▁to ▁the ▁reb els . ▁ ▁John ▁Butler ' s ▁unit ▁of ▁r angers ▁was ▁spread , ▁through ▁front ier ▁out posts , ▁from ▁Ni ag ara ▁to ▁Illinois ▁County , ▁Virginia . ▁Butler ▁commanded ▁his ▁r angers ▁from ▁his ▁headquarters ▁of ▁Fort ▁Ni ag ara . ▁In ▁ 1 7 7 9 , ▁he ▁was ▁defeated , ▁by ▁the ▁S ull ivan ▁Ex ped ition , ▁at ▁the ▁Battle ▁of ▁New town , ▁and ▁with d rew ▁to ▁Fort ▁Ni ag ara . ▁ ▁Post - war ▁years ▁and ▁death ▁At ▁the ▁end ▁of ▁the ▁Revolution , ▁John ▁Butler ▁was ▁given ▁a ▁land ▁grant ▁in ▁the ▁Ni ag ara ▁region ▁by ▁the ▁Crown ▁for ▁his ▁services ▁during ▁the ▁war ▁and ▁as ▁compens ation ▁for ▁his ▁property ▁in ▁New ▁York ▁having ▁been ▁conf isc ated . ▁He ▁developed ▁it ▁for ▁agricult ure . ▁He ▁became ▁one ▁of ▁the ▁political ▁leaders ▁of ▁Upper ▁Canada , ▁later ▁called ▁Ontario . ▁He ▁was ▁appointed ▁as ▁a ▁Deput y ▁Super int endent ▁for ▁the ▁Indian ▁Department , ▁a ▁Justice ▁of ▁the ▁Peace , ▁and ▁the ▁local ▁milit ia ▁commander . ▁He ▁was ▁also ▁prominent ▁in ▁establish ing ▁the ▁Ang lic an ▁Church ▁and ▁Mason ic ▁Order ▁in ▁Ontario . ▁ ▁Butler ▁died , ▁at ▁his ▁home , ▁at ▁age ▁ 6 8 ▁in ▁Ni ag ara , ▁Upper ▁Canada , ▁British ▁Canada , ▁now ▁Ni ag ara - on - the - L