Antonius Diogenes

Antonius Diogenes (Koinē Greek: Ἀντώνιος Διογένης) was the author of an ancient Greek romance entitled The Wonders Beyond Thule (Τὰ ὑπὲρ Θoύλην ἄπιστα). Scholars have placed him in the 2nd century, but his age was unknown even to Photius I, Patriarch of Constantinople, who wrote a synopsis of the romance. The romance was a novel of twenty-four books and was written in the form of a dialogue about travels. Photios highly praised it for its vivid narration, clarity, and the gracefulness of its descriptions.

Scholars have tended to take it as a given that Lucian had Diogenes' work principally in mind when he wrote his celebrated parody, A True Story. Upon extensive comparative study of the two works, J.R. Morgan has questioned this accepted notion.