Theophilos succeeds his father Michael II as Byzantine Emperor.

Theophilos was Byzantine Emperor from 829 until his death in 842. He was the second emperor of the Amorian dynasty and the last emperor to support iconoclasm.

Michael II, called the Amorian and the Stammerer, reigned as Byzantine emperor from 25 December 820 to his death on 2 October 829, the first ruler of the Amorian dynasty.

The Byzantine Empire, also known as the Eastern Roman Empire, was the continuation of the Roman Empire centred on Constantinople during late antiquity and the Middle Ages. Having survived the events that caused the fall of the Western Roman Empire in the 5th century AD, it endured until the fall of Constantinople to the Ottoman Empire in 1453. The term 'Byzantine Empire' was coined only after its demise; its citizens used the term 'Roman Empire' and called themselves 'Romans'.

October 2 is the 275th day of the year in the Gregorian calendar; 90 days remain until the end of the year.