The series is devoted to Christian texts from the Greek-speaking parts of the ancient Roman Empire. Published since 1897 (first in Leipzig, then in Berlin) by the Royal Prussian Academy under the project Griechische Christliche Schriftsteller, which was continued by the Berlin-Brandenburg Academy, the series offers large critical editions accompanied by historical introductions and indices of those works that have not been included in other major editions. When complete, the series will provide complete coverage of the first three centuries.

This anonymous ecclesiastical history, written in the 5th century and traditionally ascribed to Gelasius Cyzicenus, deals with the age of Emperor Constantine (ruled from 306 - 337). The critical historical edition of the Greek text presents the anonymous compilation on the basis of all the extant manuscripts and takes particular account of research into the sources. The volume is provided with a comprehensive introduction together with indexes of locations, names and words.