Thomas de Havilland
Lieutenant-Colonel Thomas Fiott de Havilland (April 1775 – 23 February 1866) was a British Army officer, and a justice and member of the legislature of Guernsey. He was born in April 1775 at Havilland Hall, Guernsey, the son of Sir Peter de Havilland, Bailiff of Guernsey from 1810 to 1821, and his wife Cartaretta, daughter and heir of the Rev. Thomas Fiott. In 1814 he was appointed civil engineer and architect for the Madras Presidency and remained in post until his retirement from the service in April 1825. He was promoted to lieutenant-colonel in 1824. After  he retired de Havilland returned to Guernsey and became a justice and member of the legislature. In 1808 he married Elizabeth Saumarez, daughter of Thomas Saumarez, and they had two sons (Thomas de Havilland, a captain in the 55th foot (d. 1843), and Charles Ross de Havilland, a clergyman, who also died before his father) and two daughters. He died at Beauvoir, Guernsey, on 23 February 1866, at the age of 90.