Schaff, Philip. History of the Christian Church (The Complete Eight Volumes in One). Amazon Kindle Edition, 2014.
Volume 2, Ante-Nicene Christianity A.D. 100-325, “Chapter 13. Ecclesiastical Literature of the Ante-Nicene Age, and Biographical Sketches of the Church Fathers.” sec. 159-204.
§ 180. Hegesippus.
Hegesippus (d. about 180), was a Jewish Christian, whom Schaff identifies as engaging in extensive travel in Syria, Greece, and Italy. His orthodoxy is not consistently affirmed by scholars. Hegesippus’ primary work, lost sometime since the 16th century, is a collected “Memorials,” which may be seen as a sort of church history (Schaff 2014, loc. 21908). It was apparently not nearly as systematic in arrangement or as exhaustive in content as the work of Eusebius. “His chief object was to prove the purity and catholicity of the church against the Gnostic heretics and sects” (Schaff 2014, loc. 21912). He survives in quotes by Eusebius. Schaff describes him as orthodox in his Christian views.