Isaac Shepherd is one of the four founders of Shepherd's Glen, a town neighboring Silent Hill, and it was he whom the town was named after. He was the town's first mayor and a member of the Order who signed a contract with Mason Bartlett, Cornelius Fitch, and Edwin Holloway. After Adam Shepherd's "betrayal", Isaac's picture was removed from the founder's hall walls and locked into an unused room, which was then boarded up.