An anonymous _Life of Patrick_, dating perhaps from the ninth century, is preserved in MSS. representing two different recensions, which I have investigated and attempted to reconstruct in “A Life of St. Patrick” (_Transactions of R.I.A._ xxxii. C, Part iii.) 1903. A corrupt text, with large accretions at beginning and end, was published by Colgan in the _Trias Thaum_. as his “Tertia Vita,” and this designation may be conveniently retained. The Life was written in Ireland by an Irishman, but the archetype of our MSS. was written in West Britain, as is shown by Brythonic (Welsh or Cornish) interpolations. One interpolation, which has led to vain speculation, must be noticed here. The passage in c. 21, alleging a visit of Patrick to Martin, can be shown to have been intruded into the context (which otherwise depends on Muirchu) and caused confusion in the sense. The interpolator states that an angel told _Martin_ to go to the _insula Tamarensis_; modern biographers have supposed that the command was given to Patrick, though it can hardly be held that there is any ambiguity in the Latin, and have conjectured many things about the mysterious island. The island is St. Nicholas at the mouth of the Tamar in Plymouth Sound, as Mr. C. J. Bates discerned. St. Martin was popular in south-west Britain; and this interpolation enables us to connect the archetype specially with south-west Britain. From it was derived a lost Glastonbury copy which is the parent of two of our existing MSS., which contain an interpolation claiming Glastonbury as Patrick’s burial-place. The author of the _Life_ used the _Confession_, Muirchu, Tírechán; but he also incorporated a number of stories and incidents not found in any of the documents in the _Liber Armachanus_. Some of these stories are also found in the _Vita Tripartita_ or the _Vita Quarta_, but others are not found elsewhere (see my enumeration, _op. cit._ 221-2). [The _Vita Patricii_, in the _Sanctilogium_ of John of Tinmouth (see Text in Horstman’s _Nova Legenda Anglie_, vol. ii.) is an abridgment of the _Vita Tertia_; cp. Bury, _op. cit._ 223-4.] 9. _Life by Probus_