Hadriania or Hadrianeia () was a town of

ancient Mysia Mysia (UK , US or ; ; ; ) was a region in the northwest of ancient Asia Minor (Anatolia, Asian part of modern Turkey). It was located on the south coast of the Sea of Marmara. It was bounded by Bithynia on the east, Phrygia on the southeast, Lyd ...

. It was the seat of a bishop from an early date. No longer a residential see, it remains a

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 metropolitan" (highest rank), "titular archbi ...

of the

Roman Catholic Church The Catholic Church (), also known as the Roman Catholic Church, is the List of Christian denominations by number of members, largest Christian church, with 1.27 to 1.41 billion baptized Catholics Catholic Church by country, worldwid ...

. Its site is located near

Dursunbey Dursunbey, formerly Balat, is a municipality and Districts of Turkey, district of Balıkesir Province, Turkey. Its area is 1,719 km2, and its population is 33,333 (2022). The mayor is Ramazan Bahçavan (Justice and Development Party (Turkey), ...

in Asiatic Turkey.

References

Populated places in ancient Mysia Former populated places in Turkey Catholic titular sees in Asia History of Balıkesir Province Hadrian Populated places established in the 2nd century Roman towns and cities in Turkey {{Asia-RC-titularsee-stub