Melody Pond (Prequel to The Impossible Astronaut)

This little girl was a child in America, 1969 who desired rescue from a spaceman. She also had knowledge of the "Monsters" in the Oval Office. She contacted President Richard Nixon for assistance, but he did not know who was calling him. She told him the words "Jefferson Adams Hamilton", leading Nixon to believe she was a boy, but The Doctor helped them to discover that these were the names of street names, the only three in the same place together in Florida, and probably all of America, according to the Doctor. She later encountered the Eleventh Doctor and Amy Pond, begging for help. To prevent a future in which the astronaut killed the Doctor, Amy fired a gun at her as she was apparently trapped in an American astronaut suit. (DW: The Impossible Astronaut) There is nothing as of yet to suggest the girl was in the astronaut suit at the time when it killed The Doctor in 2011.