Lord Chesham married, in 1877, his second cousin Lady Beatrice Constance Grosvenor (1858–1911), second daughter of
Hugh Grosvenor, 1st Duke of Westminster. They had two sons and two daughters: • 2nd Lieutenant the Honourable Charles William Hugh Cavendish (13 September 1878 – 11 June 1900), in the
17th Lancers, killed in action near
Pretoria during the
Second Boer War • Honourable Lilah Constance Cavendish (20 March 1884 – 27 April 1944), married 1903
Sir Mervyn Manningham-Buller, 3rd Baronet (1876–1956), mother of
Reginald Manningham-Buller, 1st Viscount Dilhorne • Honourable Marjorie Beatrice Cavendish (18 September 1888 – 2 July 1897) •
John Compton Cavendish, 4th Baron Chesham (13 June 1894 – 26 April 1952) Lady Chesham joined her husband in South Africa in April 1900, travelling there on the
SS Dunottar Castle with her two sisters
the Duchess of Teck and
the Marchioness of Ormonde. She was appointed a Lady of Grace of the
Order of St. John (DStJ) in July 1901, and in December the same year received the decoration of the
Royal Red Cross (RRC) for her services with the
Imperial Yeomanry Hospital during the Boer War. Lord Chesham was killed in November 1907 after a fox-hunting accident near
Daventry. He was thrown from his horse and suffered a dislocated neck. He was succeeded in the barony by his second but eldest surviving son
John, then aged 13. After his death, in 1910, Lady Chesham remarried Maj. John Alexander Moncreiffe , son of
Sir Thomas Moncreiffe, 7th Baronet. ==References==