Colonia or Koloneia, also called Colonia in Armenia (Armenian: Կոլոնիա) to distinguish it from other towns of the same name, was a town of ancient Lesser Armenia, inhabited during Hellenistic, Roman, and Byzantine times.
[1] It became important enough to be the seat of a bishop, a suffragan in the Late Roman Province of Armenia Prima, but faded like most in Asia Minor.
No longer a residential bishopric, it remains, under the name Colonia in Armenia, a titular see of the Roman Catholic Church.
[1][3] In the late 19th century, the diocese was nominally restored as an Armenian Catholic titular bishopric of Colonia.
As such it is vacant, having had the following incumbents of the intermediary (archiepiscopal) rank :