I desire to make grateful acknowledgement of help received from my friends, of whom I must specially mention Dr. L. C. Purser, Senior Fellow of Trinity College, Dublin, Mr. R. I. Best, the Rev. J. E. L. Oulton, the Rev. Dr. J. M. Harden and the Rev. Canon C. P. Price. My wife assisted me in the preparation of the index. _St. Patrick's Day, 1920._ FOOTNOTES: [1] See _Life_, §§ 6 (end), 7, 16, 17, 39 with notes, and Additional Note A. [2] _E.g._ in the doctrine of the Eucharist and of Baptism. See _Life_, § 57, and Lanfranc's letter to Donnell in Ussher, 495; _P.L._ cl. 532. [3] See p. 46, note 1, and Additional Note B. [4] _Life_, § 19. [5] R. King, _Memoir Introductory to the Early History of the Primacy of Armagh_, 1854, p. 22. [6] See Lawlor, _Psalter and Martyrology of Ricemarch_, vol. i., pp. ix-xii. [7] MS. A. 4. 20. [8] MS. 199. [9] Cotton MS. Faustina, C. 1, f. 66. [10] Lawlor, _op. cit._, pp. xii.-xvii. [11] Lanigan, vol. iii. p. 446; vol. iv. pp. 2-8; Reeves, _On Marianus Scotus_, extracted from the _Natural History Review and Quarterly Journal of Science_, July, 1860. B. MacCarthy, _The Codex Palatino-Vaticanus, No. 830_, 1892, pp. 4 ff. [12] Below, p. 18, note 6. [13] See below, p. 47, note 3. [14] p. 73. [15] _Chronicle of John of Worcester_, ed. J. R. H. Weaver, 1908, p. 16. [16] p. 18, note 6. [17] p. 47, note 3, p. 73, note 1. I can name only three bishops of Danish sees who were apparently of Danish extraction; and they all lived at a time when the Reformation was far advanced. They are Erolbh (Erulf?), bishop of Limerick, who died in 1151, and Tostius of Waterford and Turgesius of Limerick, who were in office in 1152. _A.F.M._ 1151, and _Annals of Clonenagh_ quoted in Keating, iii. 317. [18] Ussher, 491. [19] Ware, _Bishops_, ed. Harris, p. 309; Eadmer, p. 73. [20] Ussher, 518; and below, _Life_, § 8. [21] See p. 47, note 3. [22] 1115. Eadmer, p. 236. Gougaud (p. 358) infers from this passage that Limerick was at that time a suffragan see of Canterbury. But this seems impossible in view of Gilbert's share in the proceedings of the Synod of Rathbreasail five years earlier. Eadmer is not a very good witness in such matters, and his language is hardly decisive for two reasons. (1) It is not clear that he includes Gilbert among the suffragans who co-operated in the consecration: "Huic consecrationi interfuerunt et cooperatores extiterunt suffraganei ecclesiae Cantuariensis, episcopi videlicet hi, Willelmus Wintoniensis, Robertus Lincoliensis, Rogerus Serberiensis, Johannes Bathoniensis, Urbanus Glamorgatensis, Gislebertus Lumniensis de Hibernia." (2) The word "suffragan" is often used as meaning merely an assistant bishop. Thus in the fifteenth century several bishops of Dromore were "suffragans" of the archbishop of York; but Dromore was certainly not regarded as one of his suffragan sees. [23] Ussher, 532. [24] See p. xxxvi.