Oliver, George Younger, son of James Oliver, M.D., of Bloomsbury, by Mary Jane, daughter of George Younger, of Warkworth, Northumberland; b. June 28, 1889; adm. Jan. 14, 1904 (A); left July 1906; Magd. Coll. Camb., matric. Michaelmas 1908; B.A. 1912; 2nd Lieut. 7th Lond. Brigade R.F.A. June 8, 1910; Lieut. June 22, 1913; Capt. June 1, 1916; Hon. Major; served in Great War I; d. 1946.

Oldfield, Reginald Cecil, son of George William Oldfield, of Kensington, by Ada, daughter of Edwin Oldham, Town Clerk of Stockport, Cheshire; b. Sept. 17, 1891; adm. Jan. 17, 1907 (A); left July 1908; 2nd Lieut. R.F.A. Feb. 20, 1915; Lieut. June 1, 1916; acting Capt. Feb. 7, 1918; served in France and Belgium Aug. 1916 - Jan. 1919; wounded at Laventie May 1917; formerly engaged in the coal trade at Birmingham; m. June 7, 1934, Kathleen Mary, daughter of Frank Tyrrell Bakewell Edkins, of Matlock, Derbyshire.

Oldfield, John Edwin Vyvyan, brother of Reginald Cecil Oldfield (q.v.); b. June 22, 1894; adm. April 29, 1909 (A); left Dec. 1910; served in Great War I; Lieut. R.G.A. Jan. 23, 1918; a chartered secretary; F.C.I.S. April 1937; Great War II; Maj. R.A. (T.A.) Jan. 1940; T.D. April 1950.

Oldfield, Brian Thomas, son of Lawrence George Oldfield FCA, and Edith Mary Emma, d. of Thomas Blain Finlayson; b. 15 Oct. 1918; adm. Jan. 1932 (A); left Dec. 1933; St Cath. Coll. Camb., matric. 1936, BA 1939, MA 1943; m. 6 Dec. 1946 Stella May, d. of B. T. Marshall of Hailsham, Sussex; d. 6 May 1957.

Ogilvie, Alan Grant, only son of Sir Francis Grant Ogilvie, C.B., LL.D., of South Kensington, by Sarah, daughter of Alexander Ogston Gill, of Fairfield, Aberdeenshire; b. July 3, 1887; adm. from George Watson's Coll. Edinburgh April 30, 1903 (A); left July 1906; Magd. Coll. Oxon., matric. Michaelmas 1906; B.A. 1909; M.A. 1913; B.Sc. 1915; Albert Kahn Travelling Fellow 1914-5; chief of the Hispanic-American Division of the American Geo­graphical Society, New York, 1920-3; Lecturer in Geography, Edinburgh Univ. 1923-4; Reader 1924-31; Professor from 1931; hon. sec. of the Royal Scottish Geographical Society 1925-41 and president 1946-50; president of the Institute of British Geographers 1951-2; awarded the Cuthbert Peek Grant of the Royal Geographical Society 1915 and the Milne­ Edwards Medal of the Paris Geographical Society 1923; F.R.S.E.; 2nd Lieut. 7th London Brigade R.F.A. Aug. 21, 1911; Lieut. Aug. 26, 1914; Capt. June 1, 1916; served in France, the Dardanelles, and Salonika; mentioned in despatches; M.B.E. June 7, 1918; O.B.E. June 3, 1919; Serbian Order of White Eagle 1917; author of Geography of the Central Andes (1922), and other works; m. Jan. 23, 1919, Evelyn Decima, youngest daughter of the Rev. George Edward Willes, Rector of Calverton, Bucks; d. Feb. 10, 1954.

O'Flynn, D'Arcy Algernon Cuthbert Dillon, brother of Albert John Gladstone Dillon O'Flynn (q.v.); b. Nov. 12, 1885; adm. Sept. 28, 1899 (A); left July 1902; went to Canada Dec. 1906, and became a farmer; enlisted in 47th Batt. Canadian Infantry May 1915; Sgt. Dec. 1915; went out to the western front July 1916; d. Nov. 11, 1916, of wounds received in action the previous day at Courcellette, Somme, France; unrn.

O'Flynn, Albert John Gladstone Dillon, son of John James Dillon O'Flynn, of Kensington, by Elizabeth Louisa, eldest daughter of George William Lowe, of Southampton, Hants; b. Feb. 27, 1887; adm. Sept. 22, 1898 (A); left July 1903; R.M.C. Sandhurst 1906; 2nd Lieut. A.S.C. Oct. 9, 1907; Lieut. Oct. 9, 1910; Capt. Oct. 7, 1914; Major Nov. 30, 1914; served at Cape Town, South Africa, at the beginning of Great War 1; went out to the western front Aug. 1, 1915; invalided Sept. 15, 1918; mentioned in despatches L.G. Jan. 1, 1918; M.C. June 3, 1918; m. June 29, 1915, Justine Lina, second daughter of James Lionel Truter, of Kimberley, magistrate, of South Africa; d. 1948.

O'Brien, Richard Frederick Charles, son of the Rev. Philip Stephen O'Brien, D.D., Vicar of Camden Church, Camberwell, Surrey, by Eleanor Marsden, daughter of . John L. Reeves, of Cork, Ireland; b. Dec. 7, 1880; adm. Sept. 27, 1894 (A); left. July 1899; Corpus Coll. Oxon., matric. Michaelmas 1899; B.A. 1904; entered the Civil Service 1905; 2nd Lieut. Inns of Court O.T.C.; Lieut. Feb. 28, 1912; Capt. Aug. 22, 1917; temp. Lieut.-CoL 2nd City of London Yeomanry; served in France 1916; invalided; mentioned in despatches; an officer of the Trade Boards Division, Ministry of Labour; d. April 27, 1956.

Oates, William Geoffrey Ronald, son of Geoffrey Eugene Oates MD MRCP and Margaret, d. of William Baddeley Morris of Shrewsbury; b. 1 July 1909; adm. Jan. 1923 (A); left Mar. 1928; Corpus Christi Coll. Oxf., matric. 1929; adm. a solicitor Jan. 1936, practised in London; Roy. Welch Fusiliers 1940-5 (Maj.); sec. Roy. Coll. of Veterinary Surgeons 1946, gen sec. 14th Internat. Veterinary Congress 1949; m. 4 Apr. 1950 Mary Josephine, d. of Edwm Deverill of Alton, Hants; d. 12 Feb. 1976.

O’Sullivan, Curtis Hooper, brother of Cornelius Dion O’Sullivan (qv); b. 15 Sept. 1922; adm. May 1935 (A); left July 1935; Univ. of California, Berkeley, USA, BA 1947; US Field Artillery in WW2 (Lieut. ), Silver Star for gallantry (Germany) Apr. 1945; Lieut. -Col. 3rd Bn 159th Infantry; graduate (honours) Gen. Staff Coll.; Brig. -Gen. US National Guard, CA, USA; Nat. Parks Service San Francisco, CA, USA, US Dept of the Interior, to retirement 1979; m. Roseanne Haglund; d. 30 Apr 2016.