St Clydog is a mysterious figure, perhaps 6thc, perhaps a devout king of Ewyas, or a virtuous young man, or a hermit, who died in a hunting accident, or was murdered by a rival in love. Clodock takes its name from his burial place: according to one version of his legend the ox pulling the cart carrying his body refused to go any further at this point, so a church was built on the spot. According to the Book of Llandaff, Clodock was first settled and farmed in the early Middle Ages, perhaps the 6thc, by two brothers, Lybiau and Gwrfan and their nephew Cynfwr, and there is certainly evidence of settlement in this period in the form of an inscribed grave-slab found beneath the church. Clodock is not mentioned by name in the Domesday Survey but Ewyas is, and it was held by Roger de Lacy. Roger was banished in 1096 and his lands passed to his brother Hugh I de Lacy, and on his death to his son-in-law Payn fitzJohn. Gilbert de Lacy, perhaps the son of Roger, came to England in 1135 and had regained most of the Lacy possessions by 1157-58. The lands remained in the Lacy family for the remainder of the 12thc except for the periods from 1185-89 and from 1194-98, when the king held them.