Sam Jones was a unique individual; her biodata/timeline had been directly affected by a future event which was related to her time travelling, (PROSE: Unnatural History) making her life before 2002 something of a paradox.
Timeline 1 edit
Samantha Jones had a very troubled childhood. In her teenage years, she was a drug user and had the needle scars on her arms to prove it. She lived in a bedsit in King's Cross, London. She wrote letters to Amnesty while in high school and thought about spray painting a billboard. She left home in 1997, and worked in a video shop up to 2002. She smoked Benson & Hedges cigarettes, and had used ecstasy more than once. She saw the Lord of the Rings movie, but didn't think much of it.
He convinced her to accompany him back to San Francisco after her parents showed her a series of postcards they had been receiving from a Samantha Jones, including one showing a blonde Samantha Jones and the Doctor from a photobooth on Paphos.
After several days of getting to know the Doctor and Fitz's worlds, and encountering effects of the Wild Hunt (an energy pulse washing out in a reverse ripple from the scar that made her experience her alternate timelines and also altered her biodata), she ran into the scar, altering her timeline greatly, so that she encountered the Doctor (for the first time) in Totter's Yard. (PROSE: Unnatural History, The Eight Doctors)
Timeline 2 edit
Samantha Jones was a vegetarian. She hated drugs and didn't even drink Coca-Cola.
Whilst on the planet Hyspero she met (and got along brilliantly with) Iris Wildthyme. (PROSE: The Scarlet Empress) She died from radiation on Janus Prime, melting into a puddle on Menda. The Doctor later saved her by using a temporal orbit. (PROSE: The Janus Conjunction)
Sam chose to leave the Doctor while on 1996 Earth, about a year before her younger self first left Earth with the Doctor. To preserve the timeline, Sam planned to stay with and assist Sarah Jane Smith for that year and then go home to her parents the day after her younger self left despite being six years older than the last time they'd have seen her. (PROSE: Interference - Book Two)
A person matching Sam's description was briefly seen by Charlotte Pollard while aboard the airship in the heart of the Time Vortex, its inhabitants kept in a limbo-like state having been removed from the timeline by the Doctor to preserve the Web of Time. (PROSE: Repercussions...)
Born on 15 April 1980, she was sixteen when she first met the the Eighth Doctor in Totter's Yard. She attended Coal Hill School. She thought herself a pacifist, but had killed people: a Tractite and a human, the second when she was being controlled. (PROSE: Genocide, Kursaal) She was still shocked by extreme forms of violence and believed that such direct action should be beneath the Doctor. (PROSE: Revolution Man)
In her original timeline, Sam Jones had dark hair, needle scars along her arms and not a lot of muscle tone in her legs. (PROSE: Unnatural History) In her second timeline, she had short blonde hair. She ran a few kilometres every day, either through the TARDIS or around wherever she and the Doctor landed. (PROSE: Option Lock) She was sixteen when she began travelling with the Doctor, but she spent three years on Ha'olam, making her twenty-one (or thereabouts) when she finished travelling with the Doctor. (PROSE: Seeing I, Interference - Book Two)
Sam Jones came from liberal parents. She once said that the only thing that would really shock her parents was if she did drugs.
Habits and quirks edit
Sam liked to run a few kilometres each day.
She and the Doctor came up with a list of codes (numbers) to apply to different situations they might encounter (so they didn't have to come up with a plan, just say a number). (PROSE: The Janus Conjunction, Unnatural History)
Behind the scenes edit
After Freema Agyeman was cast in The Carrie Diaries, which featured a character called Samantha Jones, Torchwood script editor Gary Russell mentioned in a tweet that the alias used by Agyeman's character, Martha Jones, in the television story Reset, was a deliberate reference to the Eighth Doctor companion.  
Sam's appearance was modelled off a BBC Worldwide employee by the name of Kath. (DWM 259)
- ↑ @twilightstreets. Twitter (23 July 2013). Retrieved on 4 August 2013. “Ahhhh but, Freema, do you know *why* we used the name Samantha Jones?”
- ↑ @twilightstreets. Twitter (23 July 2013). Retrieved on 4 August 2013. “All those followers of yours who said it was cos of Sam Jones the book companion to the 8th Doctor get a gold star :-)”