ring of investiture, preserved in the public treasury, which he, John, had conveyed from the pope to the king. Alfread H. Tarleton in Nicholas Breakspear (Adrian IV.) Englishman and Pope, suggests that the letter and the ring were deposited at Winchester. Giraldus Cambrensis incorporated what was purported to be a copy of Laudabiliter in his 1189 Expugnatio Hibernica ("Conquest of Ireland"). Authenticity debate According to Curtis for the text of the Laudabiliter we only have Giraldus Cambrensis' Conquest of Ireland written around 1188, though in it his dating is not accurate, he says he must have had some such "genuine document before him". He suggests that better evidence for the grant of Ireland can be found in John of Salisbury's Metalogicus, written about 1159. John of Salisbury At the beginning of his reign, Henry II sent Rotrodus, Bishop of Evreux, Arnold, Bishop of Lisieux, the Bishop of Le Mans and Robert of Gorham, Abbot of St. Albans as ambassadors to Adrian IV. The date of this mission is the same as that claimed by Salisbury for his visit, 1155. Alfread H. Tarleton gives the date of 9 October, St. Dionysius's day, when the ambassadors set out. L. F. Rushbrook Williams also gives 9 October 1155. While both mention Robert of Gorham assisting in some royal business and being a part of deputation including three bishops selected by Henry neither mention John of Salisbury. However, John D. Hosler thinks "It is clear that John of Salibury did indeed travel to Rome as part of Henry's first embassy to Pope Adrian. According to L. F. Rushbrook Williams, Abbot Robert of Gorham evidently saw with the elevation of Adrian IV an opportunity of acquiring privileges for St. Albans with the ostensible object of assisting in the settlement of some royal business which was in progress at the curia. Alfread H Tarleton suggests that some historians have stated that John of Salisbury accompanied this mission but this is a mistake, based on a confusion of the fact that John had many interviews with the Pope at Beneventum. The mistake may be due to the fact that the King, hearing John intended to visit the Pope, sent messages and letters through him in addition to employing a regular messenger, in the person of Robert the Abbot. Gasquet suggests that there is almost conclusively evidence, that while a request of the nature described by Salisbury was