Percy family
| House of Percy | |
|---|---|
 Armorial of Percy |
|
| Country | Kingdom of England, United Kingdom |
| Titles | |
| Founded | 1067 |
| Founder | William de Percy (d.1096), 1st feudal baron of Topcliffe |
| Current head | Ralph Percy, 12th Duke of Northumberland |
The House of Percy (old French Perci) were the most powerful noble family in northern England for much of the Middle Ages, having descended from William de Percy (d.1096), a Norman who crossed over to England after William the Conqueror in early December 1067, was created 1st feudal baron of Topcliffe in Yorkshire, and was rebuilding York Castle in 1070. The name derives from the manor of Percy-en-Auge in Normandy, the home of the family at the time of the Norman Conquest. Members have held the titles of Earl of Northumberland or Duke of Northumberland to this day, in addition to Baron Percy and other titles. The Percy surname twice died out in the male line but was re-adopted by the husband of a Percy heiress and by their descendants. In the 12th century, the original Percy line was represented by Agnes de Percy, whose son by her husband Joscelin of Louvain adopted the surname Percy. Again in the 18th century, the heiress Elizabeth Seymour married Sir Hugh Smithson, who adopted the surname Percy and was created Duke of Northumberland.
William de Percy, 1st Baron Percy, who came from the village of Percy in Normandy, was in the train of William I. After arriving in England following the Harrying of the North (1069–70), he was bestowed modest estates in Yorkshire by Hugh d'Avranches. However, by the reign of Henry II the family was represented by only an heiress, Agnes de Percy (d.1203) following the death of the third feudal baron. As her dowry contained the manor of Topcliffe in Yorkshire, Adeliza of Louvain, the widowed and remarried second wife of Henry I, arranged the marriage of Agnes with her own young half-brother, Joscelin of Louvain. After their wedding, the nobleman from the Duchy of Brabant in the Holy Roman Empire settled in England. He adopted the surname Percy and his descendants were later created Earls of Northumberland. The Percys' line would go on to play a large role in the history of both England and Scotland. As nearly every Percy was a Warden of the Marches, Scottish affairs were often of more concern than those in England.
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