Eusebius, often referred to as Eusebius of Caesarea or Eusebius Pamphili, was a historian, exegete, and Christian polemicist of the early 4th century (c. 260/265 – c. 339/340). A prolific writer and a learned theologian, he is best known for his work 'Church History' (Historia Ecclesiastica), a cornerstone of historical scholarship on the Christian Church from the time of Christ until his own era. Eusebius's 'Church History' provides a chronological account of the development of Early Christianity, its spread, and the persecutions it faced, along with biographies of key figures and a wealth of other information. His methodology combined the careful use of documents and an allegorical interpretation of the Bible, marking a significant contribution both to historiography and hermeneutics. His other works cover apologetic writing, such as the 'Preparation for the Gospel' and 'Proof of the Gospel,' offering a defense of Christianity against its critics. Eusebius's literary style is characterized by an adherence to classical models and a preference for synthesis over analysis, which served his purposes well as a compiler of earlier texts. Due to his extensive work in chronicling the Church's history and defending its teachings, Eusebius is often honored as the 'Father of Church History'.