caesar
In the Roman Empire the title of Caesar was given to the Emperor. From the reign of Diocletian (284-305) on this title was conferred on the young co-emperor. This was also the highest title on the hierarchy of the Byzantine court. In the 8th c. the title of Caesar was usually given to the successor of the throne. In the late 11th c. this office was downgraded and from the 14th c. on it was mainly conferred on foreign princes.

logothetes tou dromou
Administrative Byzantine title. Initially official in charge of the public post. From the 7th C he acquired a new role and his responsibilities included ceremonial duties, protection of emperor, general supervision of diplomatic relations and collection of political information.

nomophylax
Officer responsible for the guard of law and the publication of the resolutions. Quite often the holder of the office undertook the costs himself. In Byzantium he was the nomodidaskalos (nomikos), the appointed dignitary in charge of the funtion of the Law School.

proedros
A high office of the Byzantine court, first known under Nikephoros II Phokas. The responsibilities of the proedros are rather uncertain. In the 11th c. the title was accorded oftenly, but it disapears after the 12th c. As an ecclesiastical office, proedros was equal to a metropolitan and was accorded to the regent metropolitan of a bishopric or a metropolitan see, until the election of a hierarch there.

strategos ("general")
During the Roman period his duties were mainly political. Οffice of the Byzantine state´s provincial administration. At first the title was given to the military and political administrator of the themes, namely of the big geographic and administrative unities of the Byzantine empire. Gradually the title lost its power and, already in the 11th century, strategoi were turned to simple commanders of military units, responsible for the defence of a region.