Sir Percy dam Percy's Lass won the Group 3 September Stakes in 1988 (and subsequently died of colic when Sir Percy was a foal. Sir Percy was the last of her offspring) and his damsire Blakeney won the Epsom Derby himself in 1969. Sir Percy was named after Sir Percy Blakeney, the hero of the novel "The Scarlet Pimpernel". In November 2003 Sir Percy was sent as a weanling to the Tattersalls sales. He was bought for 20,000 guineas by Will Edmeades bloodstock, acting on behalf of Anthony Pakenham. Pakenham bought the colt as compensation for losing a National Hunt Horse. Sir
Blakeney Chapel exposed to a height of prior to the excavation of 2004–05. The ruins stand on the highest point of Blakeney Eye at about above sea level. The Eye is a sandy mound in the marshes that is located inside the sea wall at the point where the River Glaven turns westward towards the sheltered inlet of Blakeney Haven. Cley Eye is a similar raised area on the east bank of the river. Despite the name, Blakeney Eye, like most of the northern part of the marshes in this area, is actually part of the parish of Cley next the Sea.