Vislor Turlough's mother
From Tardis Wiki, the free Doctor Who reference
Vislor Turlough's mother was a Trion.
Turlough's mother told him that he was impetuous and never thought things through. (AUDIO: Freakshow) She died in the Trion Civil War (TV: Planet of Fire) when Turlough was young. (PROSE: The King of Terror)
When Turlough saw a mother in the Gardens of the Dead, he looked away as it "hit too close to home". (AUDIO: Gardens of the Dead) Tegan Jovanka learnt of his mother's death from a chance remark he once made. (PROSE: The King of Terror)
