Theodorias was a Byzantine

Byzantine Empire

The Byzantine Empire was the Eastern Roman Empire during the periods of Late Antiquity and the Middle Ages, centred on the capital of Constantinople. Known simply as the Roman Empire or Romania to its inhabitants and neighbours, the Empire was the direct continuation of the Ancient Roman State...

 province

Roman province

In Ancient Rome, a province was the basic, and, until the Tetrarchy , largest territorial and administrative unit of the empire's territorial possessions outside of Italy...

 created in 528 by Emperor Justinian I

Justinian I

Justinian I ; , ; 483– 13 or 14 November 565), commonly known as Justinian the Great, was Byzantine Emperor from 527 to 565. During his reign, Justinian sought to revive the Empire's greatness and reconquer the lost western half of the classical Roman Empire.One of the most important figures of...

 and named in honour of his wife, the Empress Theodora

Theodora (6th century)

Theodora , was empress of the Roman Empire and the wife of Emperor Justinian I. Like her husband, she is a saint in the Orthodox Church, commemorated on November 14...

. It comprised a small coastal territory taken from the earlier provinces of Syria Prima and Syria Secunda. The new province remained part of the Diocese of the East

Diocese of the East

The Diocese of the East was a diocese of the later Roman Empire, incorporating the provinces of the western Middle East, between the Mediterranean Sea and Mesopotamia...

. Its capital was Laodicea

Latakia

Latakia, or Latakiyah , is the principal port city of Syria, as well as the capital of the Latakia Governorate. In addition to serving as a port, the city is a manufacturing center for surrounding agricultural towns and villages...

, and it also included the cities of Paltus

Paltus

Paltus or Paltos is a ruined city and Catholic titular see and suffragan of Seleucia Pieria in the Roman province of Syria Prima.The town was founded by a colony from Arvad or Aradus . It is located in Syria by Pliny the Elder and Ptolemy ; Strabo places it near the river Badan...

, Balaneae

Baniyas

Baniyas is a city of northwestern Syria, located at the foot of the hill of Qalaat el-Marqab , 55 km to the south of Latakia and 35 km north of Tartous , and a Catholic titular see under the Latin name of Balanea, which is presently vacant.It is famous for its orchards...

 and Gabala. Ecclesiastically, these cities retained their former allegiances to the metropolitan bishops of Syria Prima and Secunda. The province survived until the Muslim conquest of Syria

Muslim conquest of Syria

The Muslim conquest of Syria occurred in the first half of the 7th century, and refers to the region known as the Bilad al-Sham, the Levant, or Greater Syria...

in the 630s.