The full noted service for an Octave of S. Columba (which has no Octave in the Aberdeen Breviary or other extant breviary used in Scotland) points to an important church dedicated in his name. This is confirmed by an allusion in the anthem to the Magnificat of first Vesper of the Octave Day, locumque istum tibi deditum. The fact the Corpus Christi service (written in the same hand on the same leaves) is not Sarum Use, excludes Dunkeld Cathedral, and Iona is excluded because the Use is not Benedictine. There remains only one other church of any great size in Scotland for which such a service would be required, namely that of the Augustinian Priory of Inchcolm. The prayer te laudatem serva chorum ab incursu anglicorum also points in the same direction, for Inchcolm was sacked by the English in 1335, and this service was evidently written not long after that date. The service shows no connection with that in the Aberdeen Breviary. The proper anthems and Collect for Compline of Corpus Christi suggest a church of Canons Regular. The fact that the services of S. Columba, belonging to the Sanctorale, and Corpus Christi, belonging to the Temporale, are written in the same gathering and at the same time, point to their being an addition to a manuscript which was no doubt written in England at a date too early to contain Corpus Christi.