Marion Crawford was the governess of princesses Elizabeth and Margaret Rose (the daughters of the Duke of York) for 24 years, and wrote a memoir of her experiences. From “The Little Princesses“, pg. 36:

The Duke was astonishingly expert with a needle. He once made a dozen chair covers in petit point for Royal Lodge. I remember he got rather tired of filling in the background, so I obliged with that while he went on with the more amusing part of the design.

Ah, the pleasures of royalty. How many times did you wish you could simply summon a servant to do the boring parts of the canvas…