- You may be looking for the mother of the Victorian incarnation of Clara Oswald.
Elena Alison "Ellie" Oswald (TV: Death in Heaven) (née Ravenwood) was born on 11 September 1960 and died on 5 March 2005. Ellie was the mother of Clara Oswald and the wife of Dave Oswald. She frequently exclaimed, "Oh my stars!", a phrase that carried on to her daughter.
She first met Dave in 1981, when she saved him from being hit by a car after a large leaf blew into his face. The leaf grew to be a symbol of their chance meeting and their life together that ensued. They later married and had a daughter. (TV: The Rings of Akhaten) She gave birth to Clara, their only child, on 23 November 1986. (TV: Death in Heaven)
At least twice she encountered the Eleventh Doctor, both times while taking Clara to the park. The first time, from her perspective, the Doctor was hit by the ball while the Oswalds were playing football. (TV: The Rings of Akhaten) From the Doctor's perspective, he had previously seen her while he was talking with a young girl (unbeknownst to him, Clara) on the swings. When Clara ran to rejoin her mother, Ellie told her off for speaking to strangers. (WC: The Bells of Saint John: A Prequel)
Ellie died on 5 March 2005 at the age of 44, though the circumstances behind her death remain a mystery. As Clara and Dave mourned her loss at her grave site, the Doctor, investigating the history of his mysterious new companion, quietly observed them. He did not interrupt their visit, staying hidden behind an old tree. (TV: The Rings of Akhaten)
As an adult, Clara recalled and tried to emulate her mother's recipe for soufflé. She recounted her mother's saying that the soufflé wasn't the soufflé itself, but rather the recipe. (TV: The Name of the Doctor)