Brigadier-General Sir Gilbert Falkingham Clayton, KCMG, KBE, CB (6 April 1875 – 11 September 1929) was a British Army intelligence officer and colonial administrator, who worked in several countries in the Middle East in the early 20th century.

He then served in Egypt, but in 1910 he retired and left the army to work as private secretary to the Governor-General of Sudan, Sir Francis Reginald Wingate.

During the First World War, Clayton worked in army intelligence in Cairo, Egypt, serving in the newly formed Arab Bureau.

[7] In 1912, Clayton married Enid Caroline Thorowgood in London, with the ceremony being conducted by Llewellyn Henry Gwynne, the Bishop of Khartoum.

His daughter Patience (later Marshall), who suffered from bubonic plague as a child, studied at Cambridge and went on to gain an OBE for her work as a magistrate and with young offenders.

[9][10] His son John went into medicine, becoming the doctor for Eton College and "Surgeon Apothecary to the Royal Household at Windsor", in which capacity he treated the Queen Mother when she got a fishbone stuck in her throat.

[12] His widow and their three remaining children moved back to England, first to Doddington, Lincolnshire, and then to a grace and favour flat at Hampton Court.