despotes
Title introduced in the 12th century. In administrative hierarchy, the office of despotes was under the emperor and the co-emperor. From the 14th century onwards, the title was given to the governors of the Byzantine Peloponnese.

konostaulos
1) High-ranking official (third in the military hierarchy after the protomastoras and megas stratopedarches).2) Commander of fleet, admiral (from the Venetian contestabile).3) Megas konostaulos indicates as high military official from the 13th century, head of the Latin mercenaries.

megas domestikos
Supreme military commander of the imperial army. High-ranking title which was generally given to close relatives of the emperor.

megas stratopedarches
Superior officer responsible for the provision of equipment and supplies for the military forces of the byzantine empire of Nicaea.

protosebastos
Ηigh-ranking title usually bestowed upon close relatives of the emperor. The title was introduced by Alexios I Komnenos. In the 12th century it was awarded to close associates of the emperor and to members of aristocratic families, such as the Palaiologos, Tarchaneiotes, Raoul and Metochites families.

protovestiarios
(and protovestiarites) Honorific title given to high-ranking officials and future emperors during this period. The protovestiarios was originally responsible for the imperial wardrobe, but in the 9th-11th centuries the holders of the title could command an army or conduct negotiations with foreign states.