10th century

The 10th century was not one that particularly interested the Doctor, their companions or their enemies.
It was perhaps most notable, at least in terms of British history, for the rise of King Athelstan of England, and his apparently good relations with King Hywel of Wales. (TV: Planet of the Dead)
It was also among the centuries endured by Ashildr, (TV: The Woman Who Lived) a 9th centuryIn The Woman Who Lived, which is set in the year 1651, Ashildr mentions having had 800 years of adventure. Viking girl who was rendered effectively immortal when she was brought back to life by the Twelfth Doctor through a self-repairing Mire repair kit. (TV: The Girl Who Died)
== Footnotes ==