Allison Humphrey is the mother of Dan and Jenny Humphrey. She is the former wife of Rufus Humphrey. She is only shown throughout season 2. It is known that in season 1, she left her family to take a break. Then she cheated on her husband Rufus with her neighbour. Rufus then has a big fight with her but they then get back together. On thanksgivings day, Dan invites Serena and her family over for thanksigiving's dinner. He doesn't realize that Serena's mother used to date his father and that his mother, who was there, hated Serena's mother (Lily). Rufus then marries Lily in the later seasons.