Factual error: Dr. Johnson completed his dictionary in 1755, 7 years before the Prince Regent was born (1762). So it's unlikely for him to be asking the Prince for patronage.
Blackadder (1986)
1 factual error in Ink and Incapability - chronological order
Plot hole: In 'The Foretelling', it is said that Richard IV reigned for "13 glorious years" with a caption showing 1485-1498. 'The Black Seal' starts on St. Junipers' Day, 1498, but Blackadder spends 12 months locked up with Mad Gerald. So when the Royal Family are finally murdered it is actually 1499.
Blackadder: We are reprieved. It is a triumph for stupidity over common sense.
Baldrick: Thank you very much.
Blackadder: As a special reward, Baldrick, take a short holiday. [Pauses for a second.] Did you enjoy it?
The Witchsmeller Pursuivant - S1-E5
Trivia: There are in fact two versions of the bonfire scene. Although most countries use the intended censored version (where somebody coughs right as Edmund says the F word) there are a few US editions where you can hear him swearing uninterrupted.
Question: Who played the balladeer and why was Blackadder trying to kill him?
Answer: Tony Aitken played the Balladeer. Blackadder wants to kill him because he annoys him and usually sings songs about what a fool he is.
Captain Defenestrator