Terry Jones, a member of the Monty Python comedy troupe, has died at 77.

Jones's agent says he died Tuesday evening. In a statement, his family said he died “after a long, extremely brave but always good humored battle with a rare form of dementia, FTD.”

With Eric Idle, John Cleese, Michael Palin, Graham Chapman and Terry Gilliam, Jones formed Monty Python's Flying Circus, whose anarchic humor helped revolutionize British comedy.