Nagisa Tohsaka

Nagisa Tohsaka is a member of the Tohsaka Family in 1800, who served as the master of Saber during the First Holy Grail War. Although she wasn't Saber's master at first, she became her master when her father, the first master, and her brother, the second master, died. Her brother was Ren Tohsaka and her father was Nagato Tohsaka, the head of the Tohsaka Family at the time. She also lived long enough to be present during the Second Holy Grail War, although she had no interest in being in the war, insterad having her son being the master of the Tohsaka Family during that war. During the second war she's also a high ranking member of the Mages Association, and is one of the Mages who is credited with creating the association to begin with.