William Langton Coke (1843-1913) William Langton Coke was the eldest son of William Sacheverell Coke (1805-1896). He became a Colonel in the 4th Light Dragoons and later an engineer in the Government Railway Department at the Cape of Good Hope [South Africa]. In 1879 he married Ada Caroline Katherine Heugh (d 1913) with whom he had three sons: Langton Sacheverell (1878-1914), Jacinthe D'Ewes FitzErcald (1879-1963) and Anthony Launcelot Henry Deane (1884-1962).