Who was the king who lost his crown in the wash?

The king who lost his crown in the wash is King John of England, often associated with the legend surrounding the "King John and the wash" tale. This story suggests that he lost his crown while crossing the Wash, a tidal estuary in eastern England, during his flight from the advancing forces of the barons in the early 13th century. It symbolizes his troubled reign and the challenges he faced, ultimately leading to the signing of the Magna Carta in 1215.