Conversation so far:
what year was Ron \Pigpen\ McKernan born?
CANNOTANSWER.
Are there any other interesting aspects about this article?
He developed a close friendship with fellow keyboardist Tom Constanten based on their mutual aversion to psychedelics and.
What happen with the keyboardist?
eventually served as best man at Constanten's first wedding.
When did he get married?
CANNOTANSWER.

Question: What happen in his personal life?
Self-contained rewrite: What happen in Ron McKernan's personal life?