Grangemuir House was the seat of a junior branch of the Douglas family in Scotland. The house and attached estate was bought by Walter Irvine, a Scot who owned sugar estates in Tobago and Luddington House in Surrey. It then passed to Irvine's daughter, Elizabeth, and her husband, Lord William Robert Keith Douglas, the fourth son of Sir William Douglas, 4th Baronet of Kelhead, and younger brother of both Charles Douglas, 6th Marquess of Queensberry and John Douglas, 7th Marquess of Queensberry. Grangemuir House is located just north of Pittenweem in Fife, Scotland and is now sitting within Grangemuir Woodland Chalet Park. The house was of French design and was constructed as a hunting lodge for the family in the 18th century. The building was clad in the 1970s with pebbledashed concrete as a cheap way of excluding damp. Members of this branch of the Douglas family usually matriculated their arms with the mottos Jamais Arrière or Forward. However, in 1979, the previous head of the family, Walter Francis Edward Douglas (1917–2013), who reportedly converted to Roman Catholicism, was granted permission by the Lord Lyon to matriculate his arms with the motto Tendir and Trewe, as taken from the 15th century poem The Buke of the Howlat, by Sir Richard Holland, chaplain to Archibald Douglas, Earl of Moray:O Douglas, O Douglas!Tendir and trewe History Grangemuir House was given to Lord William Robert Keith Douglas (born 1783 – died 1859) along with of land surrounding it. On 24 November 1824, he married Elizabeth Irvine (died 1864); the couple had three children, William (1824–1868), Walter (1825–1901), and Charles (1837–1918). The children founded the Douglas Cottage Hospital in St Andrews in 1866 as a memorial to their mother, Lady William Douglas of Grangemuir - this memorial is still reflected in the contemporary St Andrews Memorial Hospital, one of whose wards is still called the Douglas Ward. The heir, Walter Douglas Irvine married Anne Frances Lloyd, the daughter of an Anglo-Irish doctor from County Roscommon in 1870. They had six children, a number of whom were profoundly deaf. Some of these were known by the surname "Irvine", others "Douglas", rather than "Douglas-Irvine": William Keith Douglas-Irvine (1876–1957) Capt. (Walter) Francis Douglas (1878–1950) Helen Florence Douglas MA (1880–1947), notable translator, historian & fiction writer and one of the first female graduates of St Andrews University Rev. Henry Archibald Douglas-Irvine BA MA (1883–1962), Parson Charles Gordon Douglas-Irvine