First Time Lord

The titles of First Time Lord, Second Time Lord and Third Time Lord referred to "the three most superior Time Lords".

A First, Second and Third Time Lord formed the High Tribunal (PROSE: Doctor Who and the Doomsday Weapon) who sentenced the Second Doctor to his exile on Earth. (TV: The War Games) The First Time Lord at the trial had a different appearance (TV: The War Games, PROSE: Doctor Who and the Doomsday Weapon) from the form he adopted during the Doomsday Weapon crisis. (TV: Colony in Space, PROSE: Doctor Who and the Doomsday Weapon)

Many other accounts showed that the leader of the Time Lords was known as the President of the High Council or Lord President. Morbius, a former Lord President, claimed to be "a Time Lord of the First Rank" in his battle with the Fourth Doctor. (TV: The Brain of Morbius)