Robert William Hay (1786 - 1861) - From 1812 to 1824 Private Secretary to Viscount Melville and from 1825 to 1836 the first Permanent Secretary of the Colonial Office.
Sir William Knighton (1776 - 1836) - Private Secretary to the King (George IV) and keeper of the Privy Purse from 1822 to 1830 (saved the king from bankrupcy).
Sir John Barrow FRS, FRGS (1764 - 1848) - Second Secretary to the Admiralty for from 1804 to 1806 and from 1807 to 1845 (promoter of Arctic voyages of discovery).