Krista Kennell/ZUMA Press
According to Cassidy’s last will and testament, the Partridge Family singer specifically cut out his daughter out of his will, leaving money only to his son Beau Cassidy, a 26-year-old singer/songwriter.
In docs obtained by E! News, Cassidy, who died on Nov. 21 at the age of 67, stated in the will, "It is my specific intent not to provide any benefits hereunder to Katherine Evelyn Cassidy and/or any descendant of Katherine Evelyn Cassidy."
While David was her father, Katie was raised primarily by her mother Sherry Williams and stepfather Richard Benedon.
In fact, David confirmed to the People in February 2017 that he was no longer in connection with his daughter.
Earlier in 2017, David told the publication that he no longer had a relationship with the actress.
"I wasn't her father. I was her biological father but I didn't raise her. She has a completely different life," he explained. "I'm proud of her. She's very talented. It's hard for me to even accept how old she is now."