Taking the nine monastic bodies which stand at the head of the foregoing list in order, it will suffice to say that after serving as the seat of an abbot-bishop the monastery of St. Petrock probably became collegiate and parochial. In Domesday Book it is always referred to as St. Petrock or the Church of St. Petrock. The date of its reconstruction as a monastery is obscure. There does not appear to be any evidence to show to which of the religious orders it belonged until the _Ordinatio_ of the Priory by Bishop Grandisson in 1347, in which it is ordained that the prior and convent shall celebrate the Divine Office and observe vigil, fast, silence and prayer according to the rule of Blessed Augustine. Long before that date it had therefore doubtless become a convent of the Black Canons. Sir John Maclean expressly states, though on what authority I have not been able to discover, that it was Bishop William Warelwast (1107-1136) who settled therein regular canons of St. Augustine. In the _Taxatio_ of the vicarage, by Bishop Bronescombe in 1269, the vicar was assigned, as a part of his emolument, the victuals (_liberacionem_) of one canon. The monastery of St. Germans was served by secular canons before the Norman Conquest. Bishop Leofric (1046-1073) removed them and introduced canons regular. In 1270 Bishop Bronescombe ordered the excommunication of certain persons concerning whom he vouchsafes no particulars save that they were _Sathane satellites, proprie salutis immemores_ and that they had expelled those whom he had sent to take charge of the priory during the vacancy caused by the death of Richard the late prior. His letter is valuable because it affords evidence that the bishop of Exeter claimed absolute power over the priory and its possessions so long as there was no prior appointed, and apparently the right of confirming the prior’s appointment. Of St. Michael’s Mount some particulars will be found in Chapter X. The church of St. Stephen by Launceston was like that of St. German served by secular canons at the time of the Domesday Survey. By Bishop William Warelwast (1107-1138) to whom Ralph the dean of St. Stephens had surrendered the deanery it was made an Augustinian priory and so remained until the dissolution of the religious houses by Henry VIII. Harassed and despoiled by Robert Count of Mortain in the years which followed the Norman Conquest, under the fostering care of Reginald Earl of Cornwall (1140-1175) and Richard King of the Romans (1225-1272), it soon became the wealthiest of the religious houses in Cornwall. The relations between the parochial church of St. Stephen and the priory are somewhat obscure. The church was taxed independently of the priory in 1291, but in the _Inquisitio nonarum_ of 1346 the church was assessed at £10, of which 40s. was chargeable to the prior.