49 this year (2012)
River Song is played by Alex Kingston.
River Song first appeared in 2008, when David Tennant was still playing the Doctor. The first time we saw River Song was when she died. River and the Doctor are moving in opposite directions in time, so as we, the viewers, move forward with the Doctor, we are seeing River Song's past.
So the Doctor and River can catch up to eachother on what they have done.
river song
No We saw Amy's parents in season 5 the Big Bang.Infact, River Song is the daughter of Amy and Rory.Meaning that if the Doctor and River Song's marriage was legitimate, Amy is technically the Doctor's mother-in-law. Wierd.
The Doctor and River Song have a romantic relationship. River married a robot of the Doctor that was controled by the Doctor while in an alternate reality, which brings about the question of whether the marriage ever actually happened, and if it counts because technically River married a robot.
the doctor's proper name
YES; he marries her in an alternate time line that then reverts making the marriage null and void in the episode "The Wedding of River Song".
Yes, they had a very brief and spontaneous little ceremony in the episode "The Wedding of River Song."
River Song (a.k.a Mel, Melody Pond)
No it was the Teselecta and the doctor and his TARDIS were inside, driving it.
Yes. In "Closing Time", it is shown that she is met by the eyepatch woman and two Silences. River Song is forced into a space suit, then submerged in Lake Silencio. She is seen thinking of the 'Tick Tock Goes The Clock' song at the end of the episode. In a previous episode, it shows her getting out and shooting the doctor. No one knows what they spoke of before she shoots him, however.