There are several Petrock churches round the moor--Harford, South Brent, Clannaborough; and probably the original founder and patron of Buckfast Abbey was this saint. The great distinction between British foundations and those that were Roman was this: a British church was called after its founder, whereas a Roman church received its name from some scraps of dead bones of a saint laid under the altar, or placed in it. Unhappily, we have no record of S. Petrock's labours in Devon, but there can exist little hesitation in holding that he was an apostle of the district about Dartmoor and of a tract north of it as well, as also that he laboured and died in Cornwall. Here is what Bede tells us of the manner of consecration among the Celts. It must be premised that the historian is speaking of Cedd, Bishop of the East Saxons from 653 to 664, to whom Oidilvald, King of the Deisa, had given a piece of land. Cedd had received his training from Celtic monks at Iona. "This man of God, wishing by prayer and fasting to purge the place of its former pollution of wickedness, and so to lay the foundation of the monastery, entreated the king that he would grant him the means and permission to dwell there for that purpose, during the whole time of Lent, which was then at hand. In all the days of this time, except on Sundays, he fasted till the evening, according to custom, and then took no other sustenance than a little bread, one hen's egg, and a little milk mixed with water. This, he said, was the custom of those of whom he had learned the rule of regular discipline; first to consecrate to our Lord, by prayer and fasting, the places which they had newly received for building a monastery or a church. "When there were ten days of Lent still remaining there came a messenger to call him to the king, and he, that the religious work might not be intermitted, on account of the king's affairs, entreated his priest, Cynebil, who was also his brother, to complete the work that had been so piously begun. Cynebil readily complied, and when the time of fasting and prayer was over he there built the monastery, which is now called Lastingham."[15] The name Petrock is really Peterkin, the Celtic diminutive of Peter, and it is probable that Peter Tavy is another of his foundations, as well as certain other churches now regarded as dedicated to the great apostle. The Saxons, who were saturated with Latin ideas, when they obtained supremacy, rededicated the churches to saints of the Roman calendar, if they were able to obtain from Italy some scraps of bone that it was pretended had belonged to one of the saints of the Latin calendar. But there is no evidence that the British Christians did other than call their churches after the names of the founders.