King George III did not go mad in 1800. He lost his mind sometime between 1810 and 1811. The cause is not certain, but attributed to either the death of his youngest and favorite daughter, Princess Amelia, or arsenic poisoning of the king. 1811 was the year he had been declared permanently insane and locked away in Windsor Castle.
The narrator opens the "Zeppelin" sketch saying it takes place in 1908, but at the sketch's end, the same voice says this occurred in 1900.
Twice Joseph Montgolfier says the year is 1783, but when the scene shifted to the Court of George III, the caption reads 1781. It seems the Pythons (like "King Louis XIV") had a long journey from, uh, France—and miscounted.
For the fourth series the opening and closing titles were shortened from Monty Python's Flying Circus to Monty Python. The show also moved over to BBC-2.
S 4 : Ep 6
Aired 12/5/74 (29:00)
S 4 : Ep 5
Aired 11/28/74 (28:00)
S 4 : Ep 4
Aired 11/21/74 (28:00)
S 4 : Ep 3
Aired 11/14/74 (31:00)
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