Paulus Orosius (born c. 375, died not before 418), less often Paul Orosius in English, was a priest, Christian historian, theologian and student of Saint Augustine of Hippo. It is possible that he was born in Bracara Augusta (which is now known as Braga, Portugal). Although there are some question marks regarding his biography, such as his exact date of birth, it is known that he was a person of some prestige from a cultural point of view, as he had contact with the greatest figures of his time such as Saint Augustine of Hippo and Saint Jerome. In order to meet with them Orosius travelled to cities on the southern coast of the Mediterranean Sea, such as Hippo Regius and Alexandria.
These journeys defined his life and intellectual output. Orosius did not just discuss theological matters with Saint Augustine, in fact he also collaborated with him on the book The City of God. In addition, in 415 he was chosen to travel to Palestine in order to exchange information with other intellectuals. He was also able to participate in a Church Council meeting in Jerusalem on the same trip and he was entrusted with transporting the relics of Saint Stephen. The date of his death is also unclear, although it appears to have not been earlier than 418, when he finished one of his books, or later than 423.
He wrote a total of three books, of which his most important is his Seven Books of History Against the Pagans (Historiarum Adversum Paganos Libri VII), considered to be one of the books with the greatest impact on historiography during the period between antiquity and the Middle Ages, as well as being one of the most important Hispanic books of all time. Part of its importance comes from the fact that the author shows his historiographical methodology. The book is a historical narration focussing on the pagan peoples from the earliest time up until the time Orosius was alive.
Orosius was a highly influential figure both for the dissemination of information (History Against the Pagans was one of the main sources of information regarding Antiquity that was used up to the Renaissance) and for rationalising the study of history (his methodology greatly influenced later historians).