GOAR, JACQUES. - Orientalist of the Order of Preachers, b. in Paris in 1601, d. on 23 Sept. 1653. Ordained a priest, he devoted himself to the study of Greek language and literature, and, to better understand the institutions of the Byzantine Church, he traveled to the East, where he served as prior of the convent of Chios and deepened his knowledge of the religious customs and ceremonies of the Eastern Christians. Upon his return, he was found in Rome in 1637 as prior at S. Sisto, and later in Paris in 1642.
During his numerous travels, he had the opportunity to consult manuscripts in various libraries, especially in Paris and Rome, and at the monastery of Grottaferrata, maintaining close contact with contemporary scholars such as Basilio Falasca, Leone Allazio, G. Corcoto, Pantaleone Liguridio, and others. The fruit of his studies includes a commentary on the work of G. Codino: *De Officiis magnae ecclesiae et aulae Constantinopolitanae* (Paris 1648), as well as many other lesser works. However, the masterpiece of Goar remains his edition of the *Euxológyov sive Rituale Graecorum* (Paris 1647); another edition with a new title was published in Paris in 1676, and a 2nd ed. in Venice in 1730.