Opera R. Methley (of Mount Grace) — Mount Grace (in East Harsley), Yorkshire. Charterhouse of the Assumption of St Mary the Virgin.
| Provenance: | Mount Grace (in East Harsley), Yorkshire. Charterhouse of the Assumption of St Mary the Virgin. |
| Location: | Trinity College , Cambridge |
| Shelfmark: | O. 2. 56 |
| Author/Title: | Opera R. Methley (of Mount Grace) |
| Type of evidence: | inferred evidence |
| Notes on evidence: | 'Most probably the autograph of the author' (MRJ). |
| Date: | s. xv ex. |