sentences:  With the permission of Gruffudd ap Cynan, king of Gwynedd, he translated the relics of St Dyfrig from Bardsey Island and reburied them at Llandaff.In April 1120, he began the reconstruction of the small church of the Llandaff community as a substantial Romanesque cathedral church, some impressive work from which still survives in the modern fabric.By that time Urban was at work on his master-plan, the compilation of a dossier of documents by which he could pursue some major territorial claims against the neighbouring dioceses.