Thekla (daughter of Theophilos)

Thekla
Augusta Empress of the Romans
Thekla (right) with her brother Michael III on the reverse of a solidus minted during the reign of her mother, Theodora
Byzantine co-empress
Reign	842 – c. 856
Successor	Michael III
Alongside	Theodora and Michael III
Born	Early 820s or 830s
Died	After 870
Burial	Monastery of Gastria
Dynasty	Amorian dynasty
Father	Theophilos
Mother	Theodora

Thekla (Greek: Θέκλα; early 820s or 830s – after 870), Latinized as Thecla, was a princess of the Amorian dynasty of the Byzantine Empire. The daughter and eldest child of Byzantine emperor Theophilos and empress Theodora, she was proclaimed augusta in the late 830s. After Theophilos's death in 842 and her mother becoming regent for Thekla's younger brother Michael III, Thekla was associated with the regime as co-empress alongside Theodora and Michael.

Thekla was deposed by Michael III, possibly alongside her mother, in 856 and consigned to a convent in Constantinople. Some time later, she allegedly returned to imperial affairs and became the mistress of Michael III's friend and co-emperor Basil I. After Basil murdered Michael in 867 and took power as the sole emperor, Thekla was neglected as his mistress and she took another lover, John Neatokometes. Once Basil found out about the affair, Thekla fell out of favor, was beaten and had her property confiscated.