Thirdly, and most important, were the soldiers, the foreign legions, who, drawn mostly from the Eastern parts of the Empire, brought their native deities with them. Cumont signalizes as the most active agents of the dispersion of the cult of Mithra, Soldiers, Slaves, and Merchants.[12] As far North as Hadrian’s Dyke there has been found an inscription in verse in honour of the goddess of Hierapolis, the author a prefect, probably, Cumont remarks, the officer of a cohort of Hamii, stationed in this distant spot. Dedications to Melkart and Astarte have been found at Corbridge near Newcastle. The Mithraic remains are practically confined to garrison centres, London, York, Chester, Caerleon-on-Usk, and along Hadrian’s Dyke.[13] From the highly interesting map attached to the Study, giving the sites of ascertained Mithraic remains, there seems to have been such a centre in Pembrokeshire. Now in view of all this evidence is it not at least possible that the higher form of the Attis cult, that in which it was known and practised by early Gnostic Christians, may have been known in Great Britain? Scholars have been struck by the curiously unorthodox tone of the Grail romances, their apparent insistence on a succession quite other than the accredited Apostolic tradition, and yet, according to the writers, directly received from Christ Himself. The late M. Paulin Paris believed that the source of this peculiar feature was to be found in the struggle for independence of the early British Church; but, after all, the differences of that Church with Rome affected only minor points of discipline: the date of Easter, the fashion of tonsure of the clergy, nothing which touched vital doctrines of the Faith. Certainly the British Church never claimed the possession of a revelation _à part_. But if the theory based upon the evidence of the Naassene document be accepted such a presentation can be well accounted for. According to Hippolytus the doctrines of the sect were derived from James, the brother of Our Lord, and Clement of Alexandria asserts that “The Lord imparted the Gnosis to James the Just, to John and to Peter, after His Resurrection; these delivered it to the rest of the Apostles, and they to the Seventy.”[14] Thus the theory proposed in these pages will account not only for the undeniable parallels existing between the Vegetation cults and the Grail romances, but also for the Heterodox colouring of the latter, two elements which at first sight would appear to be wholly unconnected, and quite incapable of relation to a common source.