Richard Cromwell
From Tardis Wiki, the free Doctor Who reference
Richard Cromwell was Oliver Cromwell's son and the Lord Protector of England, Scotland and Ireland for only a few months after his death.
His rule was not very popular and earned him the nickname of Tumbledown Dick.
He found a history book the First Doctor lost, which revealed that he would be a failure. He tried to show the book to his father, who refused to see it. Devastated, he returned the book to the Doctor. He was then hypnotised to forget what he had read. He died in 1712. (PROSE: The Roundheads)
