The controversy concerned ὁμοούσιος, and St Austin and St Bernard; the first 41 leaves of the manuscript contain a letter from Gwyn to Phillips, beginning 'Sir. Yt seemeth the tempestuous wynde of passion ...'; then follows a statement in the same handwriting of the questions in dispute between them, with an attestation by Samuel Macham, bookseller, and two notes appended by J. Homberston, artium magistro, and Thomas Best; and a letter from Phillips beginning 'Mr Gwyn upon Tuesday morninge last I receaved ...', and dated 'This 14 of September '62'. The back of the first leaf is filled with a Latin inscription beginning 'Bellum homousianum simul atque Augustino-Bernardinum'.