King Edward the Third

The Reign of King Edward the Third is an Elizabethan play printed anonymously in 1596. It has frequently been claimed that it was at least partly written by William Shakespeare, a view that Shakespeare scholars have increasingly endorsed. The play contains many gibes at Scotland and the Scottish people, which has led some critics to think that it is the work that incited George Nicolson, Queen Elizabeth's agent in Edinburgh, to protest against the portrayal of Scots on the London stage in a 1598 letter to William Cecil, Lord Burghley. This would explain why the play was not included in the First Folio of Shakespeare's works, which was published after the Scottish King James had succeeded to the English throne in 1603. (wiki)
King Richard the Third is considered a Shakespeare apocrypha.