Patience

Patience was the wife of Omega, an incarnation of the Doctor and a Doctor in another universe.

Biography
Patience's real name was unknown. She was given the name by Tegan.

Early Life
Patience was born in the House of Blyledge on Gallifrey, one of the last Womb-born Gallifreyans. She was apparently "immortal, barring accidents" and lived to be two million years old. She was a young woman when the Pythia cursed Gallifrey with sterility.

Life on Gallifrey
Her husband, one of the first to explore the Time Vortex, married her upon his return to Gallifrey. She was widowed when Omega disappeared after causing Qqaba to go supernova.

Patience became the Doctor's nurse and tutor, as she had been his father's and grandfather's. They fell in love, got married and had thirteen children. When the Lord President at that time targeted the Doctor's family, the Doctor took Patience to the Machine for safety.

Exile
The Machine crashed on an ice planet, where it was eventually found by human colonists in the 26th century. (PROSE: Cold Fusion)

Patience, meanwhile, regenerated shortly after the Fifth Doctor discovered her. Provost-General Tertullian Medford, believing Patience to be a threat, shot her in the head, and her body vanished. The Ferutu told the Doctor that "It's not the first time you've met her, nor will it be the last." (PROSE: Cold Fusion)

Alternate Universe
In one parallel universe or alternate timeline, Patience did not have the ability to regenerate. After meeting The Doctor and bearing his child, Patience died.

The Doctor had a picture of her on the wall of his rooms on Gallifrey. The caption read "Death is but a door."

Omega, who had control of history, took her to the anti-matter universe moments before her death. In this universe, Omega was able to give her the ability to regenerate. The Doctor was reunited with her there, but when he was faced with the choice of eternal happiness with her in a fictional world or returning to stop Omega, the Doctor chose to leave and help others. His departure from Omega's universe apparently caused the world to collapse, taking Patience with it. It was unknown if these events occured in the normal universe. (PROSE: The Infinity Doctors)