Paroecopolis is 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"....

. The original diocese was in 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...

, a suffragan of Thessalonica.

It is mentioned by Ptolemy

Ptolemy

Claudius Ptolemy , was a Roman citizen of Egypt who wrote in Greek. He was a mathematician, astronomer, geographer, astrologer, and poet of a single epigram in the Greek Anthology. He lived in Egypt under Roman rule, and is believed to have been born in the town of Ptolemais Hermiou in the...

 as being in Sintice, a part of Macedonia, and by Phlegon

Phlegon

Phlegon may refer to:*Phlegon of Marathon, one of the Seventy Disciples*Phlegon of Tralles, a Greek historian who flourished in the 2nd century*Phlegon, one of the four horses of the chariot of the sun-god Helios in Greek mythology...

 . Hierocles

Hierocles (author of Synecdemus)

Hierocles or Hierokles was a Byzantine geographer of the sixth century and the attributed author of the Synecdemus or Synekdemos, which contains a table of administrative divisions of the Byzantine Empire and lists of the cities of each...

 and Constantine Porphyrogenitus call it Parthicopolis, but the second locates it in Thrace. Stephanus Byzantius calls it Parthenopolis and relates according to Theagenes

Theagenes

There are merely a few references to the life of Theagenes of Megara amongst the ancient authors, which makes outlining a vague biography almost impossible. What we do know is that Theagenes of Megara was among the first of Greek tyrants, possibly inspired by Cypselus of neighbouring Corinth....

 the legend of its foundation by Grastus

Grastus

Grastus son of Mygdon was considered founder of Crestonia region and father of Tirse. The town Tirsae, was named after her, and of other girls, who gave rise to the name of a Macedonian city, Parthenopolis .-References:...

, son of Mygdon, said to have named the city in honour of his two daughters. Pliny has the same name, but places it in Thrace.

Bishops

Its bishop, Jonas or John, assisted at the Council of Sardica

Council of Sardica

The Roman Catholic Diocese of Sofia and Plovdiv is a Roman Catholic diocese of the Latin Rite, which includes the whole southern part of Bulgaria. The remainder of Bulgaria is comprised in the Diocese of Nicopoli. The seat of the episcopal see is in Plovdiv. The diocese is immediately subject of...

 (342 or 343); at the Council of Chalcedon

Council of Chalcedon

The Council of Chalcedon was a church council held from 8 October to 1 November, 451 AD, at Chalcedon , on the Asian side of the Bosporus. The council marked a significant turning point in the Christological debates that led to the separation of the church of the Eastern Roman Empire in the 5th...

 (451) there was present John "Parthicopolis primæ Macedoniæ". This see is not mentioned in any of the Greek Notitiæ episcopatuum.