James Gascoyne-Cecil, 4th Marquess of Salisbury son, David. James Gascoyne-Cecil, 4th Marquess of Salisbury James Edward Hubert Gascoyne-Cecil, 4th Marquess of Salisbury, (23 October 1861 – 4 April 1947), known as Viscount Cranborne from 1868 to 1903, was a British statesman. Born in London, Salisbury was the eldest son of Robert Gascoyne-Cecil, 3rd Marquess of Salisbury, who served as British Prime Minister, by his wife Georgina (née Alderson). The Right Reverend Lord William Cecil, Lord Cecil of Chelwood and Lord Quickswood were his younger brothers and Prime Minister Arthur Balfour his first cousin. He was educated at Eton and University College, Oxford, graduating BA in 1885.
Records of Prime Ministers of the United Kingdom election was Lord Rosebery, who, having resigned his ministry in May 1895, led his Liberal Party to defeat in the general election the following month when aged 48. Since peers ceased to hold this office (1902), the youngest losing Prime Minister was John Major, at 54 years and 33 days when the Conservative Party lost the 1997 general election. William Ewart Gladstone, was the oldest, at 76 years, when his party lost the 1886 general election, although he returned to office in 1892. The oldest Prime Minister to be defeated without returning to office was Benjamin Disraeli, 1st Earl of