Background
Born George Fleming Leicester, he was the eldest son of John Leicester, 1st Baron de Tabley, by his wife Georgina Maria Cottin, daughter of Lieutenant-Colonel Josiah Cottin.
Born George Fleming Leicester, he was the eldest son of John Leicester, 1st Baron de Tabley, by his wife Georgina Maria Cottin, daughter of Lieutenant-Colonel Josiah Cottin.
A Godson of George IV, he was educated at Eton and Christ Church, Oxford.
He notably served as Treasurer of the Household under William Ewart Gladstone between 1868 and 1872. In 1832 he assumed by Royal licence the surname of Warren in lieu of Leicester under the terms of the will of his kinswoman Elizabeth Warren-Bulkeley (née Warren), Viscountess Bulkeley. Lord de Tabley succeeded in the barony on the death of his father in 1827.
He sat on the Liberal benches in the House of Lords and served under successively Lord Aberdeen, Lord Palmerston and Lord Russell as a Lord-in-Waiting (government whip in the House of Lords) between 1853 and 1858 and 1859 and 1866.
In 1868 he was appointed Treasurer of the Household in the first Liberal administration of William Ewart Gladstone, a post he held until 1872, and was sworn of the Privy Council in 1869. Lord de Tabley married Catharina Barbara "Nina", daughter of Jerome, 4th Count de Salis-Soglio, in 1832.
John Byrne Leicester Warren, 3rd Baron de Tabley (1835–1895). Honorary Catharine Leicester (1838–1881).
Buried Harlington, Middlesex, beside her mother.
In 1884 the women"s ward of the Harlington, Harmondsworth and Cranford Cottage Hospital was named after her. Honorary Meriel Warren (1839-1872), married Allen Bathurst in 1862. Honorary Eleanor (1841-1814 August 1914), married Sir Baldwyn Leighton, 8th Baronet (1836-1832 January 1897), of Loton, Shropshire, in 1864.
Honorary
Francis Peter Leicester Warren (1842–1845). Honorary Margaret Warren (1847–1921), married Arthur Cowell-Stepney, 2nd Baronet (aka Emile Algernon Arthur Keppel Cowell-Stepney) (1834–1909), of Llanelli, in 1875. Their daughter Catherine Muriel Cowell-Stepney (Mission Alcyone Stepney) (1876–1952), was painted by Sir John Everett Millais.
Lady de Tabley died in 1869.
Her husband survived her by eighteen years and died in October 1887, aged 75, to be succeeded in his titles by his eldest and only surviving son, John.