All Is True

In one of his scenes with Judi Dench, Kenneth Branagh was supposed to directly cite lines from William Shakespeare's work, but he got it slightly wrong, so Dench started to laugh at the mistake. In retort, Branagh quipped "You can probably finish it!", which she promptly did. All of this was obviously not scripted, but nonetheless kept for the finished film.

When talking to the Earl of Southampton, Shakespeare repeatedly addresses him as "Your Grace". When addressing an Earl, the correct form is "My Lord" (only a duke, archbishop or monarch would be addressed as Your Grace). The real William Shakespeare spent enough time around nobility to be well aware of the correct title to use.

Referenced in Some Kind of Heaven (2020)