Question: Are  W. E. B. Griffin and Mary Gordon both writers?

Context articles: Robert Balfour, 6th of Balbirnie
York-Gordon House
The Company of Women (Gordon novel)
Denis Galloway
C. F. J. Galloway
Mary Gordon (actress)
W. E. B. Griffin
William Hamilton, Duke of Hamilton
Mary Gordon (writer)
Mary Gordon (child advocate)

Lieutenant-General Robert Balfour of Balbirnie (3 May 1772 – 31 October 1837) was a son of John Balfour of Balbirnie and Mary Gordon, daughter of James Gordon of Ellon.
York-Gordon House, more accurately known as the Patrick and Mary Gordon house, is a historic dwelling located at New Bern, Craven County, North Carolina.
 It was built in 1771, as documented by a letter from Patrick Gordon to William Hooper.
 Susan York lived in an earlier house on this site; her house was probably destroyed in the great storm of 1769 (List of North Carolina hurricanes (pre-1900)).
 The house is a 1 1/2-story, five bay, frame dwelling with a gambrel roof and Georgian / Federal style design elements.
 It rests on a brick foundation and features a full-width, one-story shed-roof porch, which was added 1786, based on estate records.
The Company of Women is a novel by Irish-American author Mary Gordon.
 First published in 1981, it is a coming-of-age story which details the sheltered upbringing of a well-educated Catholic girl named Felicitas, and how her values are challenged and altered by the turbulence of the 1960s protest movement.
 The book earned Gordon a second Janet Heidinger Kafka Prize.
William Albert Denis Galloway (5 March 1878 – 7 May 1957), better known as Denis Galloway, was a Scottish ethnographic artist and photographer.
 The elder son of Sir William Galloway (1840–1927), Mining Professor at University College of Wales in Cardiff, and Christiana Maud Mary Gordon (1853–1880).
 His younger brother was Christian Francis John Galloway (1880–1969).
 Galloway was a renowned ethonographic artist and photographer who travelled extensively in Europe, whilst living firstly in Zealand and later in Romania, recording the customs and costumes of the local people, from about 1914 until he returned to England in 1950.
Christian Francis John Galloway B.Sc.
 F.R.G.S., F.R.C.I. (13 May 1880 – 31 August 1969) was of Scottish descent, born at Llantrissant Dinas, Wales, the second son of Sir William Galloway (1840–1927), mining engineer, and Christiana Maud Mary Gordon (1853–1880), and younger brother of William Albert Denis Galloway (1878–1957).
 He qualified as a mining engineer, and was later employed by the governments of British Columbia and Sarawak in Borneo to survey coal deposits.
Mary Gordon (born Mary Gilmour, 16 May 1882 in Glasgow, Scotland – 23 August 1963 in Pasadena, California) was a Scottish actress, long in the United States, who specialized in housekeepers and mothers, most notably the landlady Mrs. Hudson in the Sherlock Holmes series of movies of the 1940s starring Basil Rathbone and Nigel Bruce.
 She would appear in nearly 300 films between 1925 and 1950.
William Edmund Butterworth III (born November 10, 1929), better known by his pen name W. E. B. Griffin, is a writer of military and detective fiction with 38 novels in six series published under that name.
 He has also published under 11 other pseudonyms and three versions of his real name (W. E. Butterworth, William E. Butterworth, and most recently William E. Butterworth III).
William Douglas-Hamilton, Duke of Hamilton, KG, PC (24 December 1634 – 18 April 1694), was a Scottish nobleman and politician.
 Born Lord William Douglas.
 He was the eldest son of William Douglas, 1st Marquess of Douglas by his second wife Lady Mary Gordon, a daughter of George Gordon, 1st Marquess of Huntly.
Mary Catherine Gordon (born December 8, 1949) is an American writer and the McIntosh Professor of English at Barnard College.
 She is best known for her novels, memoirs and literary criticism.
Mary Gordon, C.M., B.A., (born 13 October 1947) is a Canadian educator, social entrepreneur, child advocate and parenting expert.
 She is the founder and president of both Roots of Empathy and Seeds of Empathy, non-profit evidence-based programs dedicated to promoting emotional literacy and empathy among children.