Susan foreman

Susan is the doctor's granddaughter who was the first person to travel with the doctor.

After she left Gallifrey with the original Doctor, records of her true identity were deliberately obscured. She was certainly the daughter of the Lord President and she was born with a different name than "Susan", which may have been Larn or Arkytior, from the Gallifreyan for "rose". She may have been a direct descendant of Rassilon or of some other founding father of Gallifrey.
 * early years