Monty is a character mentioned in Fallout 4.
Monty was a raider who lived in The Commonwealth. Him and his partner Cathy were settled in a ruined house located in Malden. Going against his advice of moving her bed downstairs, Cathy tripped and broke her neck during a fit of sleepwalking.
They lived in a ruined pre-War house near Old Gullet sinkhole that has a front door chained from the inside and can be entered from the sinkhole via a basement door.
Monty is mentioned only in Fallout 4.