Hierocaesarea

Hierocaesarea, from the Greek for "sacred" and the Latin for "Caesar's" was a town and bishopric in the late Roman province of Lydia, the metropolitan see of which was Sardis.

This town is mentioned by Ptolemy (VI, ii, 16). Judging from its coins, it worshipped the goddess Artemis Persica.

The site of Hieroaesarea must have been between the modern Turkish villages of Beyova and Sasova, seven or eight miles southeast of Thyatira, on the left bank of the Koum-Chai, a tributary of the Hermus, in the Ottoman vilayet of Smyrna.

It is mentioned as an episcopal see in all the Notitiae Episcopatuum until the 12th or 13th century,. but we know only three of its bishops:

The see remains a (vacant) titular see in the Roman Catholic Church, with nominal bishops appointed.

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