Ralph Percy was born the second son of Hugh Percy, 10th Duke of Northumberland, and his wife, Elizabeth, née Lady Elizabeth Montagu Douglas Scott. He attended Eton College, studied history at the University of Oxford, and then land management at Reading University and worked in the Arundel Castle estate office for seven years, before moving back to Northumberland to manage the Alnwick estate for his elder brother Henry, the 11th Duke. He succeeded in the dukedom in 1995 on the death of the 11th Duke, who had no offspring. As such, he was a member of the House of Lords until the passing of the House of Lords Act 1999 ended the right of hereditary peers to sit in the House. Hansard records no contributions to House of Lords work by Northumberland. The Duke assists in managing Northumberland Estates which has many venture subsidiaries and associated trusts, which altogether own land and property in Northumberland, Scotland and to a lesser extent London, Surrey and Tyneside. Ralph Percy was ranked at number 248 in the Sunday Times Rich List 2011, with an estimated wealth of £315 million. He or the corporation is the owner of Alnwick Castle, an ancestral ducal seat, as well as Warkworth Castle and Prudhoe Castle in Northumberland; Syon House and Syon Park in London; Hulne Park and Hulne Priory at Alnwick; Albury Park in Surrey, and other listed buildings such as Brizlee Tower. Northumberland Estates manages : directly managing of forestry and of farmland, with approximately 100 tenant farmers managing the remaining bulk of the land. The 12th Duke has shown a greater degree of entrepreneurial zeal than recent predecessors, and his redevelopment plans meet frequent criticism. His sale on the open market, rather than at a lower price to The National Gallery, of Raphael's Madonna of the Pinks in 2003 was also subject to some criticism. At much the same time, in response to a Foot and Mouth disease crisis, the Duke cut the rents of tenant farmers by 10 percent. The Duke has showed opposition to certain wind farms, however he adopted renewable energy in the restoration of a hydroelectricpower generator. The Duke is a sponsor of the NCEA Duke's Secondary School. On 8 April 2014, the estate's management announced the date of a new art sale to raise £15 million to cover the costs of the Newburn flood caused by the failure of a culvert for which it was responsible on 25 September 2012. The sales were completed by Sotheby's in July 2014.
Marriage and children
Northumberland married Jane Richard on 21 July 1979 at Traquair Parish Church. They have four children:
