When did someone try to steal the crown jewels?

The most notable attempt to steal the Crown Jewels of the United Kingdom occurred in 1671 when Colonel Thomas Blood, an Irishman, disguised himself as a clergyman and infiltrated the Tower of London. He successfully managed to steal the jewels, but was apprehended shortly after. Blood was surprisingly pardoned by King Charles II, who was impressed by his audacity. This event remains one of the most famous incidents in the history of the Crown Jewels.