Develtos was a town in the Empire of Videssos.

It was near Develtos that the first major battle of the civil war between the Avtokrator Maleinos II and the Grand Domestikos Stylianos was fought. Maleinos was victorious forcing Sylianos to flee to the Khamorth frontier.

Centuries later, Kassianos came to Develtos by chance. He was on his way to Opsikion when a driving winter storm led him to the town. While here, he came to believe that the monks of the town were regularly violating the seventh chapter of Pakhomios' Rule.