|The REAL Spread of the Pericope de Adultera|
And its apparent origin appears to be in the Far East according to Eusebius, not the West. The first explicit notice of the passage is given by Papias around 120 A.D. in the middle of Turkey. As Hort himself notes further on:
Papias is independantly confirmed as "a hearer of John and companion to Polycarp" by Irenaeus. He apparently lived from about 60-135 A.D. Eusebius calls him 'bishop of Hierapolis' (the modern town of Pamukkale, in Turkey near Colossae) but little else is known. Although Eusebius scorns him as "a man of small mental capacity", this is apparently because Eusebius himself interpreted the Gospels allegorically, while Papias believed in their literal truth.