This author is known only as "Ἄγνωστος Ἐκκλησιαστικός," a modern scholarly label meaning "Ecclesiastical Work Anonymous." They lived sometime between the 2nd and 5th centuries CE in the Roman Empire, a period spanning the formative development of early Christian doctrine. No biographical details about their life, background, or specific location are known.

The author wrote a single surviving work, an untitled Christian treatise composed in Greek. This type of formal, discursive text typically addressed points of doctrine, church discipline, or contemporary theological controversies for an educated Christian audience. The precise content and arguments of this specific treatise are not detailed in the available sources.

According to modern scholars, the anonymity of this work is not unusual for early Christian literature. Many texts from this era circulated without clear authorship due to factors like the collective nature of community teaching or the later loss of identifying information. The significance of such anonymous works lies in their value as historical witnesses. They can reveal regional variations in belief, local debates, and aspects of Christian thought that may not be fully represented in the writings of the major, well-known Church Fathers. This treatise, therefore, represents a fragment of the broader and more diverse intellectual landscape of early Christianity.