Courtesy of Wikipedia

1137: Theodora III

Byzantine Empress

Born: c.984 AD, Constantinople, Byzantine Empire (Present-day Istanbul, Turkey)

Died: 1056 AD, Constantinople, Byzantine Empire (Present-day Istanbul, Turkey)

Also Known As: Theodora Porphyrogenita

Theodora was the daughter of Constantine VIII.

Theodora spent most of her life in and out of convents and was placed there by her own sister on at least one occasion. Theodora ruled twice in her lifetime, the first time as a co-regent with Zo√ę and the second time on her own. The second time she ruled, Theodora was around seventy years old.

Very little else of her life story is known.

Sources:

https://www.brooklynmuseum.org/eascfa/dinner_party/heritage_floor/theodora_iii

https://www.britannica.com/biography/Theodora-Byzantine-empress-981-1056