Historical Context
The martyrdom is set during the reign of the emperor Aurelian (270–275), remembered in the Church's calendars for a renewed persecution of Christians. The three martyrs of Ancyra commemorated on November 29 — Phaedrus, Philoumenos, and Valerian — are all assigned to the year 274 and to the same governor, Felix, who is named as presiding over the trials.
Ancyra (modern Ankara) was the capital of the Roman province of Galatia. For Phaedrus specifically the sources preserve only the essentials: his name, the year, and that he was killed by having hot resin poured over him.