Louis the Pious was co-Emperor along with his brother.
== See also ==Family tree of Byzantine emperorsList of Roman emperorsList of Trapezuntine emperorsList of Roman usurpersList of Byzantine usurpersSuccession to the Byzantine EmpireList of Roman and Byzantine empressesList of Byzantine emperors of Armenian originFamily tree of Roman emperorsHistory of the Byzantine Empire== Notes ==== References ==
This is a list of the Byzantine emperors from the foundation of Constantinople in 330 AD, which marks the conventional start of the Eastern Roman Empire, to its fall to the Ottoman Empire in 1453 AD

