Jim (The Empty Child)
From Tardis Wiki, the free Doctor Who reference
Jim was one of the young boys Nancy was looking after on the streets of Blitzed London. He had been evacuated to a family in the country, but fled back home to London. Although he couldn't read or write, Jim was determined to send a letter to his missing dad using an old typewriter. After he stopped typing, the 'Empty Child' began psychically using the typewriter. (DW: The Empty Child/The Doctor Dances)