In 2021, Jack discovers that he has another daughter named Gwendolyn "Gwen" Rizczech, from his previous relationship with Tiffany Rizczech, before he came to Salem. Gwen despises Jack for abandoning her as a child, which is why she despises her younger sister, Abigail for getting all the attention that should have been hers after Gwen drugged Abigail in the early 2020. However, Jack claims he doesn't remember her mother. However, it is later confirmed that Jack didn't know about her or her mother, because Jack's mother in-law, Laura Horton was the one who was paying Tiffany to stay away in order to preserve her daughter Jennifer's marriage to Jack.