Theodora, daughter of Constantine VII (born c. 946) was the second wife and first Empress consort of John I Tzimiskes. She was a daughter of Constantine VII and Helena Lekapene. Her maternal grandparents were Romanos I and Theodora. Theodora and her sisters Zoe, Agatha, Theophano and Anna were initially held in Kanikleion. Later they were split with Theodora, Zoe and Theophano sent to the monastery of Antiochus while Agatha and Anna were sent to Myrelaion, a nunnery built by their maternal grandfather.