Byatt was born on the 22nd of March, 1875, in Tottenham, Middlesex to schoolmaster Horace Byatt M.A., of Midhurst, Sussex, and Laura (née Archer). He attended school at Midhurst Grammar School, in Sussex. He was then admitted into Lincoln College, Oxford, where he obtained a Bachelor of Arts degree in 1898. Following this, he worked within the Colonial Service. His service began in Nyasaland (what is now Malawi), where he stayed until 1905, then went to British Somaliland. He was appointed commissioner and commander-in-chief of British Somaliland in 1911, serving until 1914, when he became Colonial Secretary in Gibraltar. From 1914 to 1916 he was lieutenant-governor and Colonial Secretary of Malta. In 1916 he became an administrator in British East Africa, later becoming the first governor of the new British mandate of Tanganyika in 1920. He was appointed Governor and Commander-in-Chief of the League of Nations Mandated Territory of Tanganyika from 1920 to 1924. In 1924 he married Olga Margaret Campbell of Argyll, and had three sons with her: Sir Hugh Campbell Byatt (1927–2011), Ronald (Robin) Archer Campbell Byatt (1930–2019), and David Byatt (born 1932). He died on the 8th of April, 1933, in London, aged 58.
Francis Laing was born at Edinburgh on 1 May 1773, son of Alexander, an architect. Laing studied at the University of Edinburgh 1789-90 and 1792-93, and the University of Glasgow in 1794, taking a Physics class under John Anderson. He was Snell Exhibitioner in 1796, and went on to graduate BA from Oxford in 1799 and MA in 1801. He took Holy Orders, becoming Reverend Francis Laing. In 1803 Laing served as Private Secretary to the Governor of Malta, and was shortly afterwards appointed Secretary to the Government of the Island, a post which he held till 1814. Returning to the UK, Laing was Rector of Llanmaes, Glamorgan from 1814 to 1824, and Rector of Humshaugh, Northumberland, from 1820 to 1832. He died at the Mythe, Tewkesbury, on 24 November 1861.