Hebrew. In 1706 he was enabled through Lloyd's liberality to publish in quarto an edition of the fictitious Joseph ben Gorion's ‘History of the Jews,’ in the original Hebrew, with a Latin translation and notes (Hearne, Remarks, Oxf. Hist. Soc. i. 127). In 1707 he published at the Hague ‘L'Église Romaine convaincue de dépravation, d'idolatrie, et d'antichristianisme,’ 8vo. In 1710, at the instance of Sharp, archbishop of York, he assisted John Ernest Grabe [q. v.] in the perusal of the Arabic manuscripts in the Bodleian Library relating to the Clementine constitutions, on which Sharp had engaged Grabe to write a treatise against Whiston (ib. iii. 239). In 1717 he was appointed by the vice-chancellor to read the Arabic lecture at Oxford in the absence of the professor, John Wallis. In 1718 appeared his ‘Vindiciæ Kircherianæ, sive Animadversiones in novas Abrahami Trommii Concordantias Græcas versionis vulgo dictæ LXX. Interpretum,’ 8vo, Oxford, which, though vigorously written, was considered an unfair attack on Trommius, then an aged man. In 1723 he issued in folio Abū Al-Fidā's ‘Life of Mahomet,’ in Arabic, with a Latin translation and notes, dedicated to an early patron, Lord Macclesfield. The lord almoner's professorship of Arabic at Oxford was conferred on Gagnier in 1724. He had prepared an edition of Abū Al-Fidā's ‘Geography,’ and in 1726 or 1727 printed as a specimen seventy-two folio leaves, but was unable to proceed further from want of encouragement. The fragment was noticed in the ‘Journal des Savants’ for 1727. For the benefit of those who were unable to read his Latin translation of Abū Al-Fidā's ‘Mahomet,’ he compiled a ‘Life’ in French, which was published by Le Clerc at Amsterdam in 1732 (2 vols. 8vo). Of this work, which is quite unworthy of Gagnier's reputation, an edition in three volumes appeared at Amsterdam in 1748; and a German translation in two volumes at Köthen in 1802–4. He had previously furnished an anonymous continuation to Count H. de Boulainvilliers's ‘La Vie de Mahomed,’ 8vo, London, 1730. Gagnier died on 2 March 1740. He left a son, John, born in 1721, who died on 27 Jan. 1796, aged 75 (Foster, Alumni Oxon. 1715–1886, ii. 504; Surtees, Durham, iii. 124, 125). Gagnier's other publications are: 1. ‘Lettre sur les Médailles Samaritaines,’ printed in ‘Nouvelles de la République des Lettres,’ in the ‘Journal de Trévoux,’ 1705, and a Latin version in vol. xxviii. of Ugolinus's ‘Thesaurus Antiquitatum’ (p. 1283). 2. ‘Tabula nova et accurata exhibens paradigmata omnium conjugationum Hebraicarum,’ four large leaves, Oxford, 1710, printed for the use of his pupils. 3. ‘Carolina. Ecloga in diem natalem Willielminæ Carolinæ, serenissimæ Principis Walliæ,’ 4to, London, 1719. 4. ‘Liber Petra Scandali de principio et causa schismatis duarum ecclesiarum Orientalis et Occidentalis, ex Græco Arabice redditus,’ 8vo, Oxford, 1721. 5. ‘Animadversiones in novam Josephi Gorionidis editionem à Jo. Frid. Breithaupto publicatam,’ printed in vol. v. of Le Clerc's ‘Bibliothèque Choisie.’ He also contributed to vol. ii. of J. A. Fabricius's edition of ‘St. Hippolytus’ (1716), ‘Fragmenta ex catena in Pentateuchum,’ &c., with a Latin translation. At the invitation of Dr. Mead he translated from the Arabic the treatise of Rhazes on the small-pox. ‘Instructions sur les Nicodémites,’ attributed to Gagnier, has been shown by Barbier to have been written by J. Graverol.
[Hearne's Remarks and Collections (Oxf. Hist. Soc.); Biographie Universelle (Michaud), xv. 360–2; Nouvelle Biographie Générale, xix. 166–7; Oxford Ten Year Book; Oxford Graduates.]
GAGAHAN, USHER (d. 1749), classical scholar, belonged to a good family of Westmeath, Ireland; was educated at Trinity College, Dublin, but took no degree, and then proceeded to study for the Irish bar. His parents had brought him up as a protestant, but he was converted in youth to Roman catholicism, and was thus prevented from being called to the bar. He soon married a rich heiress, whom he treated very cruelly, and a separation followed. His relatives were alienated by his conduct, and he came to London, where he tried to make a livelihood out of his classical scholarship. He edited in Brindley's beautiful edition of the classics the works of Horace, Cornelius Nepos, Sallust, Juvenal, Persius, Virgil, and Terence, all published in 1744; Quintus Curtius in 1746; Catullus, Propertius, and Tibullus, issued in 1749. He also translated into good Latin verse Pope's ‘Essay on Criticism’ (‘Tentamen de re critica’), which appeared in 1747 with a Latin dedication to the Earl of Chesterfield, and a poem descriptive of the earl's recent reception in Dublin as lord-lieutenant. But Gahagan fell into very bad company in London. A compatriot, Hugh Coffey, suggested to him a plan for making money by filing coins or ‘diminishing the current coin of the realm.’ Another Irishman, of some education, Terence Connor, who is variously described as Gahagan's servant or lodger, was introduced into the conspiracy. For some months the scheme worked well. But the suspicions of the authorities were roused
