Thaddeus "Thad" Beaumont is the son of Shayla and Glen Beaumont, the husband of Elizabeth Beaumont, and the father of Wendy and William Beaumont. He is the author of cerebral literary fiction, and writes gritty crime fiction under the pseudonym of George Stark. He lives in Ludlow, Maine and has a summer home in Castle Rock, Maine.
In Needful Things, Thad is mentioned. Alan Pangborn remembers how Thad would get drunk and call him. He also remembers how Thad's wife took the twins and left him.