The Doctor
Conflicting origins
The Doctor had a variety of different and contradictory origins. (PROSE: Unnatural History, Celestial Intervention - A Gallifreyan Noir) Throughout his life, his past was rewritten by groups and individuals including Faction Paradox, Rassilon, and the Enemy. (PROSE: Unnatural History)
Species
By some early accounts, Dr. Who was a human. (PROSE: Doctor Who and the Daleks, TV: "Journey into Terror", [source needed], et al.) from the 49th century. (PROSE: Unnatural History) He built Tardis (PROSE: [[]], TV: [[]])
However, according to the vast majority of accounts, the Doctor was a Time Lord from the planet Gallifrey. (TV: The War Games, The Runaway Bride, [source needed] et al.) By some of these accounts, both his mother and his father were Time Lords.[source needed] By others, he was half-Time Lord and half-human, (TV: Doctor Who, Hell Bent, et al.) born to a human mother, (TV: Doctor Who, et al.) Penelope, (PROSE: The Infinity Doctors, The Gallifrey Chronicles) and a Time Lord father, (PROSE: Grimm Reality, et al.) Ulysses. (PROSE: The Infinity Doctors, The Gallifrey Chronicles, Unnatural History) By still others, he was not born but instead woven from a Loom and grew up in the House of Lungbarrow. (PROSE: Cat's Cradle: Time's Crucible, Lungbarrow)
After the end of the War in Heaven, following the erasure of the Time Lords from history, (PROSE: The Ancestor Cell, The Adventuress of Henrietta Street) the Doctor was originally Soul, a member of the Council of Eight, who suffered amnesia and, after the two landed the Jonah in a junkyard in London, 1963, believed that Zezanne was his granddaughter. (PROSE: Sometime Never...)
The Eighth Doctor was often confused as to whether he was Loomed or born to parents, (PROSE: The Scarlet Empress, The Shadows of Avalon) sometimes remembering both at the same time. (PROSE: The Infinity Doctors, Unnatural History)
Past lives
According to most accounts, the Doctor's trip with his granddaughter Susan to a junkyard in London, 1963, occurred before his first regeneration. (PROSE: The Time of the Doctor, et al.)
However, by some accounts, the Doctor had already regenerated several times before he went with Susan to the junkyard. (TV: The Brain of Morbius, PROSE: Cold Fusion, The Power of the Daleks, Something at the Door, Doctor Who and the Brain of Morbius, AUDIO: Cold Fusion)
A renowned explorer, he lived in the House of Blyledge with his wife Patience. Together, they had thirteen children across several incarnations, and multiple grandchildren, although most of their family was killed in a government culling of the womb-born. The Doctor barely escaped with his newborn granddaughter in a stolen TARDIS. (PROSE: Cold Fusion)
Additionally, some accounts said that the Doctor's biodata included memories from a founder of Time Lord society called "the Other". (PROSE: Remembrance of the Daleks, et al.)
According to one account, these memories indicated that the Other was an "Old Man" from Victorian England who invented the TARDIS to help the police, then left Earth to introduce civilisation to a jungle planet called Gallifrey. (PROSE: Human Nature) By another account, the Doctor's secret was that he was Nyarlathotep. (PROSE: The Death of Art)
By one account, the Doctor had these memories because, after the Other committed suicide by throwing himself into the Prime Distributor for the Looms, he was reincarnated as the Doctor. The First Doctor eventually travelled back in time to early Gallifreyan history to pick up the Other's granddaughter, who instinctively recognized him as her grandfather. (PROSE: Lungbarrow) According to other accounts, the Other was instead just an alias used by the Doctor when he travelled back in time to influence Rassilon in early Gallifreyan history. (PROSE: The Scrolls of Rassilon, COMIC: The Lost Dimension)
The Fifth and Sixth Doctors had only vague memories of their life from before what they remembered to be their second regeneration; (PROSE: Cold Fusion, COMIC: The World Shapers) further back, great chunks were missing. (PROSE: Cold Fusion) The Eleventh Doctor was sure that he had regenerated only twelve times. (TV: The Time of the Doctor)