Neidpath Castle is a ruined tower house about a mile west of Peebles in the Scottish Borders. The L-shaped castle overlooks the Tweed and is not open to the public. An early castle on this site was probably built by Simon Fraser of Oliver Castle between 1263 and 1266. At that time he was High Sheriff of the Tweed Valley. early 14th In the late 19th century the Clan Hay acquired the Barony of Neidpath through marriage to the Fraser heiress. Sir William de Haye († c. 1390) probably left today's castle at the end of the 14th century. century. She stayed until April 17. In the family for the 17th century, although Sir William's grandson, Sir William Hay, married the daughter and heiress of Sir Hugh Gifford of Yester, and so came into possession of Yester Castle, which became the family seat;