One of the founding members of the Monty Python comedy troupe has been diagnosed with dementia. The New York Post’s Page Six reports that Terry Jones, 74, received the diagnosis.

Along with John Cleese, Michael Palin, Eric Idle, Terry Gilliam and the late Graham Chapman, Jones formed Monty Python’s Flying Circus in the 1960s.

The British film academy, in announcing that Jones will be honored by its Welsh branch for his outstanding contribution to film and television, also announced the diagnosis. A rep for the academy said Jones has primary progressive aphasia, which impairs the ability to use language.

Jones is reportedly no longer able to give interviews, The Post notes.

Jones directed the Monty Python movies “Life of Brian” and “Monty Python’s The Meaning of Life, and co-directed “Monty Python and The Holy Grail” along with Gilliam.

Jones plays “Mum” in this clip from the second episode of “Monty Python’s Flying Circus,” with Graham Chapman as “Dad” and Eric Idle as “Ken” …