William Hay, 10th Marquess of Tweeddale

Hay was born at Yester House on 29 January 1826. He was the third son (of six sons and eight daughters) born to Lady Susan Montagu and George Hay, 8th Marquess of Tweeddale (1787–1876).[1] Among his many prominent siblings were Lady Susan Hay (wife of James Broun-Ramsay, 1st Marquess of Dalhousie), Lady Hannah Hay (wife of Simon Watson Taylor), Lady Elizabeth Hay (wife of Arthur Wellesley, 2nd Duke of Wellington), George Hay, Earl of Gifford, Lord Arthur, later Earl of Gifford and later 9th Marquess of Tweeddale, Lord John Hay, Lady Jane Hay (wife of Sir Richard Taylor), and Lady Emily Hay (wife of Sir Robert Peel, 3rd Baronet).[2]

His paternal grandfather was George Hay, 7th Marquess of Tweeddale and Lady Hannah Charlotte Maitland (a daughter of James Maitland, 7th Earl of Lauderdale). His maternal grandparents were William Montagu, 5th Duke of Manchester and Lady Susan Gordon (third daughter of Alexander Gordon, 4th Duke of Gordon).[2]

As the third son of a Marquess who was not expected to inherit the title, Hay was educated at the Imperial Service College and prepared for a career in the Civil Service.

From 1845 to 1862, he served in the Bengal Civil Service, including some years as Deputy Commissioner of Simla and then as Superintendent of the Hill States of Northern India.[3]

Following his permanent return from India Hay was Liberal Member of Parliament for Taunton from 1865 to 1868, and was elected again for Haddington Burghs in 1878. He also became Chairman of the North British Railway Company.[3]

After succeeding his brother Arthur as Marquess of Tweeddale on 29 December 1878, he became the owner of estates totalling some 40,000 acres in Scotland.[3] In 1881 he was created Baron Tweeddale of Yester in the peerage of the United Kingdom, giving him a seat in the House of Lords.[1]

As well as being Hereditary Chamberlain of Dunfermline, he was Lord High Commissioner to the General Assembly of the Church of Scotland from 1889 to 1892 and, again, from 1896 to 1897.[3]

Honours

The grave of William Montagu Hay, Yester Parish Church, Gifford, East Lothian

On 26 October 1898 Tweeddale was appointed a Knight of the Thistle and was invested at Windsor Castle on 8 December.[4] He was also a Deputy Lieutenant for the counties of Haddingtonshire (now called East Lothian and Berwickshire) and a Brigadier-General of the Royal Company of Archers, a ceremonial unit that serves as the Sovereign's Bodyguard in Scotland.[5]

The Hay grave, Yester Parish Church

On 18 May 1878, Lord Tweeddale was married to Candida Louise Bartolucci (1854–1925)[6] at St Augustine's Church, London. Candida was a daughter of Signor Vincenzo Bartolucci of Cantiano, Italy.[1] Candida's sister, Evelyn Bartolucci, was the second wife of Adm. Sir Astley Cooper Key. Together, William and Candida were the parents of:[2]

• Lady Susan Elizabeth Clementine Hay (1879–1964), who married Walter Waring, MP, son of Charles Waring, MP, in 1901.[2]
• Lady Candida Louisa Hay (1882–1882), who died at birth.[7]
• William Hay, 11th Marquess of Tweeddale (1884–1967), who married Marguerite Christine Ralli,[8] daughter of Alexander Ralli and step daughter of Lewis Einstein, in 1912.[9]
• Lord Arthur Vincent Hay (1886–1914), who was killed in action in the First World War during the First Battle of the Aisne. He married Menda Ralli, only daughter of Ambrose Ralli, in 1911.[10] After his death, she married Col. Robert Edward Kennard Leatham.[2]
• Lt. Col. Lord Edward Douglas Hay (1888–1944), who married Violet Florence Catherine "Bridget" Barclay, only daughter of Maj. Cameron Barclay, in 1917.[2]

He died on 25 November 1911 at his house in London, 6 Hill Street,[11] and was succeeded by his eldest son, the Earl of Gifford (born 1884).[3] He is buried at Yester Parish Church in Gifford, East Lothian, close to his family home at Yester House.

• William Montagu Hay, 10th Marquess of Tweeddale at National Portrait Gallery, London