The 13th century was a time of some interest to the Doctor and his companions.

A knight from this century was brought forward to the late 20th century, thanks to the Master's TOMTIT device. (TV: The Time Monster) During unspecified years this century, the Third Doctor defeated the villainous Lord Waldean de Beauvain, (COMIC: The Magician) while the Eleventh Doctor and Amy Pond pursued Shoju, an alien traveller, to Japan. (COMIC: Samurai's Secret) Also, St John's Monastery was built in this century. (TV: The Rebel Flesh) Late in this century, the Second Doctor, Jamie McCrimmon and Victoria Waterfield visited Scotland and met a young William Wallace. (PROSE: On a Pedestal)

Likely the most historically significant event, however, happened in 1215, when the Fifth Doctor, Turlough and Tegan thwarted a plan by the Master to undermine King John's promulgation of the Magna Carta. (TV: The King's Demons)

As with most centuries of the first two millennia, the 13th century was home to Jack Harkness, Amy Pond and an Auton duplicate of Rory Williams. A version of Jack from around the time of the deaths of Toshiko Sato and Owen Harper existed in this century, having been buried alive in the 1st century by his brother, Gray. He perpetually died and resurrected an unknown number of times in an earthen tomb underneath Cardiff. (TV: Exit Wounds) Meanwhile, a near-dead Amy Pond was kept alive inside the Pandorica, beginning in the 2nd century. An Auton version of Rory kept vigil near her the entire time. They both awaited a moment in the mid-1990s when a young Amelia Pond would touch the outside of the Pandorica and restore Amy to full health. (TV: The Big Bang)

It was substantially unclear whether the events of the subsequent Big Bang Two erased Amy and Rory's presence in the 13th century. This ambiguity was caused, in part, because the non-Auton, married Rory Williams claimed to have remembered being "made of plastic" at his wedding reception, suggesting that, at least inasmuch as he was concerned, he and Amy were present in the 13th century. (TV: The Big Bang) Amy seemed to also remember those events, and displayed a fondness for the Auton Rory both during her honeymoon (TV: A Christmas Carol) and during a kind of lullaby to her newborn child Melody Pond. (TV: A Good Man Goes to War)