List of Illustrations Acknowledgements Manuscript Sources Cited Bibliography (including Bibliographical Abbreviations) Other Abbreviations Map of the Medieval Diocese of Bangor INTRODUCTION THE DIOCESE OF BANGOR Gwynedd Uwch Conwy, Dyffryn Clwyd and Arwystli Creuddyn/Gogarth/Llandudno Clas and Familia Introduction of a Chapter Diocesan Structure, Administration and Personnel Episcopal and Archidiaconal Households Officiales, Bailiffs and Seneschals Extent of 1306/7 - Manors, Lands and Tenants of the Bishop of Bangor THE BISHOPS OF BANGOR Hervey David the Scot Meurig Vacancy and Arthur de Chargan Gwion Alan of St Cross Robert of Shrewsbury Cadwgan of Llandyfái Richard or Rhirid Anian DIPLOMATIC ANALYSIS OF THE ACTA External Features Types of Documents Beneficiaries and Addressees Products of the Beneficiary Palaeography Household Scribes Autograph Seals Sealing Arrangements Internal Features Language of the Bishops' Acta Intitulatio Inscriptio Salutatio Notificatio Arenga Dispositio First person singular and first person plural Indulgences References to St Deiniol Iniunctio Corroboratio Sanctio Date Eschatocol Conclusion EDITORIAL METHOD BANGOR EPISCOPAL ACTA 1092-1306 Hervey, no. 1 David the Scot, no. 2 Meurig, nos. 3-6 Gwion, nos. 7-12 Alan of St Cross, nos. 13-15 Robert of Shrewsbury, nos. 16-23 Cadwgan of Llandyfái, nos. 24-35 Richard or Rhirid, nos. 36-55 Anian, nos. 56-102 APPENDIX: ITINERARIES OF THE BISHOPS OF BANGOR, 1092-1306 INDEX OF PERSONS AND PLACES INDEX OF SUBJECTS