This city, as appears from its coins – which bear the epigraph or – where the inhabitants are called
Macedonians, may have been founded by
Antigonos Dokimos. The city's name in Greek is Romanized as
Dokimeion, Dokimia Kome, Dokimaion, and later
Dokimion.
Strabo places Docimium somewhere about
Synnada: he calls it a village, and says that there is there a quarry of Synnadic stone, as the
Romans call it, but the people of the country call it Docimites and Docimaea; the quarry at first yielded only small pieces of the stone, but owing to the later efforts of the Romans large columns of one piece are taken out, which in variety come near the Alabastrites, so that, though the transport to the sea of such weights is troublesome, still both columns and slabs were brought to Rome of wondrous size and beauty. The word
Docimaea () in this passage of Strabo appears to be corrupt. It should be either or . Strabo says that the plain of Synnada is about 60
stadia long, and beyond it is Docimium. The
Catholic Encyclopedia infers from this that he supposed Docimium to be not far from the limit of the plain. The Table makes it 32 M. P. between Synnada and Docimium, and Docimium is on the road from Synnada to
Dorylaeum; but the number is certainly erroneous. Docimium was the most important marble quarry and workshop for
sarcophagi until around the late third century when the production of the famous columnar sarcophagi ended. == Episcopal see ==