LIBERATUS, Deacon of Carthage. - Famous for his Breviarium causae Nestorianorum Eutychianorum. In 535 he was a member of an African embassy that went to Pope John II for information; later he was in Constantinople and Alexandria.
On these journeys he gathered the material for his book, with the intention of proving that the condemnation of the Three Chapters by Justinian was a mistake. The book appeared around 560. His sources were the Historia ecclesiastica tripertita of Cassiodorus (perhaps he had received the Historia tripertita from the author himself, as he sends his Breviarium to Cassiodorus; v. P. Courcelle, Les lettres grecques en Occident, Paris 1943, p. 363, n. 1), the Gesta synodalia (acts of the Council of Chalcedon), the ecclesiastical history of Zacharias Rhetor (?), and the letters of the popes. L. is also the first Western witness to the appearance of the writings of Pseudo-Dionysius.