Made me chuckle...various links below depending on subscriptions, taste and a bit of high brow stuff too
https://www.telegraph.co.uk/news/2020/11/29/monty-python-holy-grail-sketch-shares-punchline-15th-century/
https://www.thetimes.co.uk/article/old-joke-monty-python-s-gag-was-medieval-bgpgww3pm
https://www.youtube.com/embed/o1M9FHPGYoY
https://www.bl.uk/onlinegallery/ttp/sherborne/accessible/introduction.html