June 21, 1221 – Joan, daughter of King John, is married to King Alexander of Scotland.
June 21, 1377 - Edward III died at Sheen Palace. He is buried at Westminster Abbey. Since his son Edward, the Black Prince, died before he did, his grandson Richard became king.
June 21, 1942 - The Battle of Okinawa finally ends.
June 21, 1982 - Princess Diana gives birth to Prince William.