He came to England (where he made his profession) while the trial of the Minister-General was yet pending in the Roman Court[968]. He is mentioned as speaking at a chapter at Oxford soon after coming to England--probably either the visitatorial chapter or the chapter held to protest against the visitor’s conduct in 1238[969]. Soon after 1250 he received a command from the General to go to Paris as lecturer, but he seems to have obtained leave to continue his studies at Oxford owing to his weak health[970]. He probably lectured on the sentences as B.D. about this time. But soon afterwards, ‘_ob vehementiores perturbationum occasiones_[971],’ in Adam Marsh’s words, he formed the ‘inexorable resolution’ of going to France in accordance with the General’s permission: and Adam in the name of the other friars, requested the Provincial to facilitate his departure by providing him with suitable companions and the necessary manuscripts[972]. Early in 1253 again, Adam writes to the Provincial: ‘I beg you to look out for some one competent to act as secretary to Friar Richard of Cornwall[973].’ It may then be inferred that he went to Paris in 1253, where, according to Eccleston, ‘he gave cursory lectures on the sentences and was judged a great and admirable philosopher[974].’ After lecturing in Paris, he returned to Oxford, it appears, and became regent-master of the friars (c. 1255?)[975]. It was here that he developed the ‘errors,’ the verbal subtleties, which Roger Bacon so unsparingly denounced. Writing in 1292, Bacon says[976]: ‘Et optime novi auctorem[977] pessimum et stultissimum istorum errorum[978], qui vocatus est Ricardus Cornubiensis, famosissimus apud stultam multitudinem, set apud sapientes fuit insanus et reprobatus Parisius propter errores quos invenerat et promulgaverat, quum sollempniter legebat sentencias ibidem, postquam[979] legerat[980] sentencias Oxonie, ab anno Domini 1250{o}. Ab illo M CC L igitur tempore remansit multitudo in huius magistri erroribus usque nunc, scilicet per quatraginta annos et amplius, et maxime invalescit Oxonie sicut ibidem incepit hec demencia infinita.’ Adam Marsh, though in somewhat general terms, gives a far more flattering account of Richard[981]. Martin de Sancta Cruce, Master of the Hospital of Sherbourne, bequeathed to him in his will dated November, 1259, _unum habitum integrum_, and a copy of the Canonical Epistles[982]. Assisi MS. 176 contains a compilation ascribed by a note in a late hand to ‘Master Richard Rufus of England;’ the volume was in the possession of the friars at Assisi in 1373, consists of 226 leaves, and seems to contain more than one treatise: it is not rubricated. _Inc._ ‘Deus autem qui dives est in misericordia propter nimiam caritatem suam.’