Hadriania or Hadrianeia ( grc, Ἁδριάνεια) was a town of ancient Mysia. 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 archbish ...

of the

Roman Catholic Church The Catholic Church, also known as the Roman Catholic Church, is the largest Christian church, with 1.3 billion baptized Catholics worldwide . It is among the world's oldest and largest international institutions, and has played a ...

. Its site is located near

Dursunbey Dursunbey, formerly Balat, is a town and district of Balıkesir Province in the Marmara region of Turkey Turkey ( tr, Türkiye ), officially the Republic of Türkiye ( tr, Türkiye Cumhuriyeti, links=no ), is a transcontinental country l ...

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 {{Balıkesir-geo-stub