I read a rumor that Franco's daughter Lauren is connected to another major family in PC through her mother. So, who do you think Lauren's mother is? Franco had told Carly that he was married to Lauren's mother and when they divorced, she took their daughter from him.
I think that maybe Lauren's mother is Karen Wexler. That would make Lauren Scott Baldwin's granddaughter. Karen was about the same age as Jason, which means she was about the same age as Franco. She left town from 1995-1997, then came back. Maybe during the two years she was gone she met Robert Frank ("Franco"), married him, had his daughter, divorced him, then left her daughter with someone else.