His father had died whilst he was away, and his uncle Cataw, or Cado, had assumed the rule, but he was succeeded by the turbulent Constantine. The arrival in Cornwall of Cybi gave occasion to an insurrection, and an attempt was made to displace Constantine, and elevate Cybi to the throne. It failed, and Cybi was obliged to fly for his life. He took with him a party of attached disciples and his uncle Cyngar. After a brief stay in Glamorgan he crossed into Ireland, and visited S. Enda in Aran, and remained with him for four years.
Cyngar was so decrepit with age that he could eat no solid food, and Cybi bought a cow with its calf to supply the old uncle with milk. This led to ructions. The calf strayed into the meadow of a monk of the name of Fintan, who impounded it. The consequence was angry altercation and so much unpleasantness that Cybi had to leave. He crossed to Ireland, took boat in Dublin Bay, and landed in Lleyn, the rocky promontory of Carnarvon, where his wicker-work coracle got on a reef that tore the leather covering. However, all reached the shore in safety, and Cybi founded a church where is now Llangybi, near Pwllheli.
Maelgwn, king of Gwynedd, was hunting in Lleyn one day, when a goat he was following fled for refuge to Cybi’s cell, and this led to the king meeting the saint. He was so impressed with his goodness and dignity that he made him a present of the caer at Holyhead, and to this day the Welsh name for the town is Caergybi.
Shortly after this “Magna et verbosa epistola venit e Capreis,” the violent tirade of Gildas was launched at the heads of the British princes. Now one of the companions of Cybi was Caffo, a brother of Gildas. Maelgwn insisted on his dismissal, and Cybi reluctantly obeyed. Caffo left and got as far as Rhosyr, now Newborough, in Anglesey, when some shepherds of Maelgwn’s queen, incensed at the indignity put on their master, fell on him and killed him. The church of Llangaffo marks the site of the murder. This took place about 545, and Maelgwn died of the yellow plague in 547. Cybi survived him to about 554.
There is a menhir at Clorach, near Llanerchymedd, with a curious hunch on it, popularly called “Tyfrydog’s Thief.” The story goes that a thief got into the church of Llandyfrydog and stole the Bible, put his spoil on his back, and ran away, but was turned to stone with the Bible he had carried off.
Not far from this prehistoric monument were two wells called after S. Cybi and S. Seiriol. Here they were wont to meet at midday, Cybi walking from the west and Seiriol from the east.
Cybi would start in early morning along the old Roman road, and he had the sun in his face all the way, and in like manner Seiriol had it behind him. They met at noon, and lunched together and drank from their respective wells. Then Cybi turned west to retrace his steps, so also did Seiriol; and consequently Cybi had the evening sun blazing on his face for his homeward walk, and Seiriol was still in dusk, with his shadow running before him. The result was that Cybi was tanned, whereas Seiriol remained fair, and the former on this account obtained the name of Cybi the Tawny and his comrade from Penmon that of Seiriol the Fair.
Matthew Arnold wrote a poem on the meeting at Clorach, but not knowing the place, and not knowing the directions taken, missed the point of the story.
The church of Caergybi is fine. The chancel is Early English, with a Decorated east window. There was intended to have been a central tower, and the church was a cross church originally. The tower was never completed. The porch and side aisle are rich Perpendicular, and there is some quaint carving outside the south transept; and the south doorway within the porch is peculiarly rich, though the figure sculpture is poor. Over the door in a niche is the Trinity, popularly mistaken for a representation of Maelgwn Gwynedd. A south chapel, in excellent taste, from the designs of Mr. Harold Hughes, has been erected, with niches containing statuettes of Cybi and Seiriol. It contains a recumbent figure of the Hon. William Owen Stanley, good, but wrongly placed.
The nave has internally on each side an arcade of three Tudor arches. On the north, the piers are octagonal; on the south, clustered of four shafts, with general capitals. The arrangement of the transepts is clumsy, like other Welsh examples, running from north to south, uninterrupted by arches, and giving the effect of one church set at right angles to another.