Bishop Cantilupe also wrung from the Welsh King Llewellyn some manors which he had seized, and Cantilupe, after a successful lawsuit against the Earl of Gloucester to determine the possession of a chase near the Forest of Malvern, dug the dyke which can still be traced on the crest of the Malvern Hills.Excommunicated by Archbishop of Canterbury John Peckham, he went to the papal court in Orvieto to plead his case with the pope.
In the first half of the 14th century the rebuilding of the central tower, which is embellished with ball-flower ornaments, was carried out.
At about the same time the chapter house and its vestibule were built, then Bishop Trevenant, who presided over the Bishopric from 1389 to 1404, rebuilt the south end and groining of the great transept.
The execution, or murder, is said to have taken place at Sutton, four miles (6 km) from Hereford, with Ethelbert's body brought to the site of the modern cathedral by 'a pious monk'.
At Ethelbert's tomb miracles were said to have occurred, and in the next century (about 830) Milfrid, a Mercian nobleman, was so moved by the tales of these marvels as to rebuild in stone the little church which stood there, and to dedicate it to the sainted king.
In the 7th century the cathedral was refounded by Putta, who settled here when driven from Rochester by Æthelred of Mercia.
The cathedral of stone, which Milfrid raised, stood for some 200 years, and then, in the reign of Edward the Confessor, it was altered.
The testimony was regarded as conclusive, and 40 years after his death, in 1320, the bishop's name was added to the roll of saints. The choir stalls support forty 14th-century misericords.
These misericords show a mixture of mythological beasts, grotesques and everyday events, there appears to be no pattern to the content.
One of the most notable of the pre-reformation Bishops of Hereford, who left his mark upon the cathedral and the diocese, was Peter of Aigueblanche, also known as Bishop Aquablanca, who rebuilt the north transept.