Caesaropolis is a Byzantine

Byzantine

Byzantine usually refers to the Roman Empire during the Middle Ages.Byzantine may also refer to:* A citizen of the Byzantine Empire, or native Greek during the Middle Ages...

 city and a Catholic titular see

Titular see

A titular see in various churches is an episcopal see of a former diocese that no longer functions, sometimes called a "dead diocese". The ordinary or hierarch of such a see may be styled a "titular bishop", "titular metropolitan", or "titular archbishop"....

 on the coast of eastern Macedonia

Macedonia (region)

Macedonia is a geographical and historical region of the Balkan peninsula in southeastern Europe. Its boundaries have changed considerably over time, but nowadays the region is considered to include parts of five Balkan countries: Greece, the Republic of Macedonia, Bulgaria, Albania, Serbia, as...

.

It was founded in 836 by the Caesar

Caesar (title)

Caesar is a title of imperial character. It derives from the cognomen of Julius Caesar, the Roman dictator...

Alexios Mosele

Alexios Mosele (Caesar)

Alexios Mosele or Musele/Mousele was a Byzantine aristocrat and general, chosen by Emperor Theophilos for a time as his heir, betrothed to his daughter Maria and raised to the supreme dignity of Caesar. He campaigned in the Balkans, recovering territory from the Slavs, and fought with some...

 to consolidate Byzantine control over the Slavic tribes of the area.

It is mentioned in Heinrich Gelzer

Heinrich Gelzer

Not to be confused with the German classical scholar Matthias Gelzer, who wrote on Julius Caesar and the Late Roman Republic.Heinrich Gelzer was a German classical scholar. He wrote also on Armenian mythology. He was the son of the Swiss historian Johann Heinrich Gelzer...

's Nova Tactica (1717) and in Parthey's Notitiae episcopatuum

Notitiae Episcopatuum

The Notitiae Episcopatuum are official documents that furnish Eastern countries the list and hierarchical rank of the metropolitan and suffragan bishoprics of a church....

, III (c. 1170-1179) and X (twelfth or thirteenth century), as a suffragan of Philippi

Philippi

Philippi was a city in eastern Macedonia, established by Philip II in 356 BC and abandoned in the 14th century after the Ottoman conquest...

 in Macedonia. Lequien (II, 65) speaks of the see, but mentions no bishop. Manuscript notes give the names of two titulars, Meletius, who was alive in April, 1329, and Gabriel, in November, 1378.