Hay-Drummond was born in
Bath, Somerset, the son of
Robert Hay-Drummond, 10th Earl of Kinnoull and his second wife, Sarah Harley, daughter of
Thomas Harley,
Lord Mayor of London. Hay served as
Lord Lyon King of Arms from 1804 until 1866, succeeding his father in that office. He served as colonel of the Perthshire Militia from 1809 to 1855, and from 1830 to 1866 he was
Lord Lieutenant of Perthshire. Lord Kinnoull married Louisa Burton Rowley, daughter of
Sir Charles Rowley, 1st Baronet, on 17 August 1824. They had nine children: • Lady Louisa Hay-Drummond, married
Sir Thomas Moncreiffe, 7th Baronet; one of their daughters was
Georgina Ward, Countess of Dudley •
George Hay-Drummond, 12th Earl of Kinnoull (1827–1897) • Lady Sarah Hay-Drummond (1828–1859), married
Hugh Cholmondeley, 2nd Baron Delamere of Vale Royal (b. 3 Oct 1811, d. 1 Aug 1887) • Captain Hon. Robert Hay-Drummond (1831–1855) • Lady Frances Hay-Drummond (died 1886) • Captain Hon. Arthur Hay-Drummond (1833–1900), Captain in the
Royal Navy, succeeded to the
Cromlix and Innerpeffray estates; married 1855 Katherine Derby • Lady Elizabeth Hay-Drummond (1835–1902), married
Sir Frederick Arthur, 2nd Baronet • Lady Augusta Sophia Hay-Drummond (died 1915), mother of
Geoffrey Twisleton-Wykeham-Fiennes, 18th Baron Saye and Sele • Colonel Hon. Charles Rowley Hay-Drummond (1836–1918) He died in
Torquay,
Devon, where he had lived the last six months of his life. The earldom passed to his eldest son, George. ==References==