Patience

"Patience" was a Time Lady and wife of Omega, and the Doctor.

Early life
In an alternate universe, she was widowed when Omega disappeared after causing Qqaba to go supernova, she became the Doctor's nurse and tutor, as she had been his father's and grandfather's. The Doctor also had a picture of her on the wall of his rooms on Gallifrey. The caption read "Death is but a door." (PROSE: The Infinity Doctors)

Exile
Moments before Patience's death, Omega, who had control of history, took her to the anti-matter universe. In this universe, Omega was able to give her the ability to regenerate. The Doctor was reunited with her there, but once in a "paradise", he began to doubt whether his memories with Patience were real. He began to consider that his memories, life, and love with Patience were fabricated by Omega to convince the Doctor to take his place within anti-matter. When the Doctor thought this, the anti-matter universe shifted into a broiling thunderstorm, and Patience's character suddenly and inexplicably shifted, implying the assumption was correct. With the Doctor faced with the choice of eternal happiness with her in a fictional world or returning to stop Omega, Patience spurred his decision to leave and help others. His departure from Omega's universe apparently caused the world to collapse, taking Patience with it. (PROSE: The Infinity Doctors)

Physical appearance
In one incarnation, Patience was slender with black hair cut in a bob and vivid green eyes. She had freckled shoulders and a birthmark on her ankle, and in the Doctor's picture of her wore an archaic Gallifreyan dress of a gold material. After regenerating in Omega's world, she had long blonde hair and blue eyes. (PROSE: Cold Fusion, The Infinity Doctors)