Conversation so far:
Did Walter Payton have a family?
Payton married Connie Norwood in 1976.
Did they have children?
The couple had two children.
Did the children play sports?
CANNOTANSWER.
What else was significant about his personal life?
A 2011 biography by Pearlman describes a tumultuous personal life very different from his positive public image.
Why was it tumultuous?
Payton was a consistent adulterer, and a multiple drug user.
What kind of drugs?
His drug use began with painkillers provided to him by the Bears to cope with the punishment he absorbed during games.
Did this interfere with his playing?
personal life very different from his positive public image.
Did he get help for his drug use?
CANNOTANSWER.
Are there any other interesting aspects about this article?
Payton had claimed his date of birth as July 25, 1954.
Was this not considered his real birthdate?
Jeff Pearlman discovered his actual date of birth to be July 25, 1953.

Question: Why did he lie about this?
Self-contained rewrite: Why did Payton lie about July 25, 1954?