In 2011 series opener "The Impossible Astronaut '' / "Day of the Moon '', River, along with Amy and her husband Rory (Arthur Darvill), is contacted by a future version of the Doctor to meet up in the United States. As they enjoy a lakeside picnic, the Doctor is killed by an assailant in a space suit, and the trio give him a Viking funeral, in Lake Silencio. In 1969, the present Doctor and company subsequently encounter a little girl (Sydney Wade) who wears the space suit, which River tells the Doctor is a life support unit; the suit has been designed by the hypnotic aliens known as the Silence. Homeless, the girl is later shown regenerating in New York City, 1970. In "A Good Man Goes to War '', it is revealed that River is Amy and Rory 's daughter Melody (Harrison and Maddison Mortimer), who was conceived in the TARDIS while it was in the Time Vortex and consequently carries Time Lord DNA; the name River Song comes from a recursive translation of Melody Pond via the language of the Gamma Forests; which have no ponds, only rivers; hence the translation of "Pond '' to "River. '' Baby Melody is kidnapped by Madame Kovarian (Frances Barber) to become a weapon against the Doctor.
how does river song have time lord dna
conceived in the TARDIS while it was in the Time Vortex