Byzantine Senate
The Senate was mostly composed of statesmen and officials, ranging from the most important statesmen in the Empire such as the Master of the Office and the Master of Soldiers to provincial governors and retired civil servants. The Senatorial families in Constantinople tended to be less affluent and less distinguished than those in the West (where the size of the Senate had also been increased to 2,000 in the 4th century). Some aristocrats attempted to become Senators in order to escape the difficult conditions that were imposed on them by late Roman Emperors such as Diocletian (reigned 284-305 AD). The curiales (Roman middle class) were often forced to become decurions where they were charged with participating in local government at their own expense as well as having to collect taxes and pay any deficits from their own pockets. As it was recognised that many who sought seats in the Senate were doing so primarily to escape the harsh duties of the decurion Theodosius I decreed that they must complete their public service even if they became Senators.
The Senate was lead by the Prefect of the City (Constantinople), who conducted all of its communications with the Emperor. It was composed of three orders, the "illustres", "spectabiles" and "clarissimi". The members of the "illustres" were those who held the highest offices in Eastern Rome, such as the Master of Soldiers and Praetorian Prefects. The "spectabiles" formed the middle class of the Senate and consisted of important statesmen such as proconsuls, vicars and military governors of the provinces. The "clarissimi" was the lower class of the senate and was attached to the governors of the provinces and to other lesser posts. Members of the lower two orders were permitted to live anywhere within the empire and were generally inactive Senators. The majority of active members in the Senate were the "illustres", whose important offices were usually based in Constantinople and so were able to attend the Senate frequently. By the end of the 5th century the two lower classes were completely excluded from sitting in the Senate. During the reign of Justinian I the numbers of "clarissimi" were significantly increased which caused many officials to be promoted to the rank of "spectabiles" and this in turn caused there to be an increase of the numbers of "illustres", which had previously been the elite class of the Senate. As a result a new order, the "gloriosi", was created to accommodate the highest ranking senators. It is important to note that being a Senator was generally a secondary career for most of the Senates members, who usually possessed important positions within the administrative machinery of the Empire.
Powers and Functions
Whilst the powers of the Byzantine Senate were limited, it could pass resolutions ("senatus consulta") which the Emperor might adopt and issue in the form of edicts. It could thus suggest Imperial legislation, and it acted from time to time as a consultative body in co-operation with the Imperial Council. Some Imperial laws took the form of 'Orations to the Senate', and were read aloud before the body. The Western Roman Emperor, Valentinian III, in 446, formulated a legislative procedure which granted to the Senate the right of co-operation, where any new law was to be discussed at a meeting between the Senate and the Council before being confirmed by the Emperor. This procedure was included in Justinian's code although it is unclear whether it was fully adopted in the East. In addition the Emperor would use the Senate as a judicial court, and trials for high treason were sometimes referred to it. Ordinary crimes would also often be judged by a court consisting of the Prefect of the City and five Senators chosen by lot. The Senate also maintained constitutional significance in that officially Emperors were to be chosen by the military and the Senate, although succession was almost always hereditary.
Confrontations with the Emperor
There were at least three incidents when the Senate attempted to assert authority on the basis of their constitutional importance regarding the succession of an Emperor. In 457 they offered to make the Master of Soldiers, the Alan Aspar, Emperor, but the tribune and Senator Marcian, who was Aspar's subordinate, ascended to the throne. In 532, some of the Senators gave their support to the Nika rioters against Justinian I, who did not like or trust the wealthy Senate. After 541, the Senate lost many of its members due to a plague pandemic and during the ensuing economic turmoil, Justinian confiscated the wealth of many of the remaining Senators. In 608 during Phocas rule the Senate declared Heraclius consul. Heraclius later was elected emperor. Previous emperor Phocas was deposed by the Senate and arrested in a church by two senators. [ [http://www.fordham.edu/halsall/med/herrin.html Judith Herrin. The Formation of Christendom. Princeton Univ Press. 1987] ]
When Emperor Heraclius died in 641, he left the empire to be ruled by his both sons, Constantine III and Heraklonas. Martina, the wife of late Heraclius, demanded imperial power for herself, and declared this in a grand ceremony held in the Hippodrome of Constantinople which was attended by the Senate, other high official and people of Constantinople. Opinion of the Senate and the people being strongly against her, wanting Heraclius' sons to rule, Martina was forced to return to the Great Palace of Constantinople in defeat. However, Constantine died only four months later, leaving his brother Heraklonas as sole ruler, and rumours of his own mother having assassinated him started to spread. Soon afterwards, a revolt led by general of the army named Valentinus began, and Heraklonas was forced to accept his young nephew Constans II as co-ruler.
In an attempt to lower the chances of Constans ruling, Heraklonas named his brother David (Tiberius) as co-ruler too. This, however, did not ease the discontent among the Senate and the people, and soon the Byzantine Senate deposed Heraklonas. His nose was slit, Martina's tongue cut out and they were exiled to Rhodes. Constans II became sole emperor.
Decline
The Senate's power was gradually reduced over the course of history, although it still existed into the 13th century. The Senate's last known act was to elect Nicolas Canabus as Emperor in opposition against Isaac II and Alexius IV during the Fourth Crusade. [Phillips, Jonathan. "The Fourth Crusade and the Siege of Constantinople". 2004. pp. 222-226.]
Senate Houses
There were two Senate houses in Constantinople; one, built by Constantine, was on the east side of the Augusteum, close to the Imperial Palace whilst the other was on the north side of the Forum of Constantine. The Senate lost its houses in the 6th century and from then on assembled in the Great Palace of Constantinople.
References
Books
* Bury, J. B. "History of the Later Roman Empire", vol. 1.
See also
* Byzantine aristocracy and bureaucracy
* Byzantine Empire
* Roman Senate