Sir Ernest Barker was born on September 23, 1874, in Stockport, Cheshire, England.

He was an English historian, teacher, and writer. He was educated at Manchester Grammar School and Balliol College, Oxford University. Barker was a Fellow of Merton College, Oxford, from 1898 to 1905, St John's College, Oxford, from 1909 to 1913, and New College, Oxford, from 1913 to 1920. He spent a brief time at the London School of Economics. He served as Principal of King's College London from 1920 to 1927, and subsequently became Professor of Political Science at the University of Cambridge in 1928, being the first holder of the chair endowed by the Rockefeller Foundation. In June 1936, he was elected to serve on the Liberal Party Council. Barker was knighted in 1944. In 1958, he was elected a Foreign Honorary Member of the American Academy of Arts and Sciences. His many works included "The Political Thought of Plato and Aristotle" (1906), "Political Thought in England from Herbert Spencer to the Present Day" (1915), "National Character and the Factors in its Foundation" (1927), "Reflections on Government" (1942) and "Principles of Social and Political Theory" (1951).

In 1900, he married Emily Isabel Salkeld (1871–1924) and, in 1927, he remarried Lady Olivia Stuart Horner (1891-1976). He died on February 17, 1960, in Cambridge, England.

George Frederick Barker was born on July 14, 1835, in Charlestown, Massachusetts.

He was an American physician and scientist. In 1858, he graduated from the Yale Sheffield Scientific School. He became a chemical assistant at Harvard Medical School in 1858–1859 and in 1860–1861, professor of chemistry and geology in Wheaton College, Illinois. In 1864, he became the professor of natural science at the Western University of Pennsylvania, now known as the University of Pittsburgh, where he undertook experiments to produce electric light by passing the current through a resisting filament. He subsequently went to Yale as a professor of physiological chemistry and toxicology, and later was a professor of physics at the University of Pennsylvania, in 1879–1900, when he became emeritus professor. He served as president of the American Association for the Advancement of Science in 1879; president of the American Chemical Society; vice-president of the American Philosophical Society; a member of the United States Electrical Commission; and for several years an associate editor of the American Journal of Science. He lectured in many cities and wrote several textbooks on chemistry and physics.

He died on May 24, 1910, in Philadelphia, Pennsylvania.

Harry Barker was born about 1872 in Dudley, England.

He moved to Canada in 1907. He served at McGill University for thirty years as a janitor in the Arts Building and at the Faculty of Law. Known as McGill's "poet laureate," much of his verse, written between 1908 and 1945, was published in the McGill Daily and the Literary Supplement. Barker was a student of Shakespeare who knew more about the Bard of Avon than most of the Honour English students who took rigorous courses in Elizabethan drama. He would stand for an hour leaning on his broom and reciting some of the more flown passages from Hamlet or The Merchant of Venice, while open-mouthed undergraduates stood and stared wondering that one head could hold all he knew. He was a kind of McGillian Homer who wrote poems with enthusiasm and love. In the 1930s, he published “Simple Rhymes for Simple Folk: Second Series.”

McGill University Department of English awards the Harry Barker Memorial Prize in English to the student with the highest standing in English in the initial year.

John Barker was a butcher who lived in London, England in the 18th century. He was the second husband of Sarah Hall Barker, who he married between approximately 1738 and 1755. He and Sarah had a daughter, Alice Barker Wise.

John Jonah Barker was born on September 30, 1869, in Greywell, Hampshire, England.

He immigrated to Canada in 1884. He was an editor, printer, and proprietor of The Cowansville Observer.

In 1896, he married Martha Amelia Seale (1870–1960). He died April 8, 1935, in St. Petersburgh, Florida and is buried in Cowansville, Quebec.

Dr. Lewellys Franklin Barker was born on September 16, 1867, in Norwich, Ontario.

He was a Canadian physician and an authority on eugenics, heredity, and neurology. He received his degree of Bachelor of medicine in 1890 from the University of Toronto Medical School. After interning at Toronto General Hospital, he came to Johns Hopkins in 1892 to join the staff of William Osler’s clinic. He later held a fellowship and served a residency in pathology, and, in 1897, he was appointed Associate Professor of Anatomy. While at Johns Hopkins, Barker travelled abroad to further his studies. He studied in Germany in Karl Ludwig’s physiological laboratory and toured the South Pacific, Asia, and India to study diseases common to these areas. In 1900, he became a Professor of Anatomy at the University of Chicago. He was appointed to the 1901 Federal Commission on Plague in San Francisco. In 1905, Barker returned to Johns Hopkins and was appointed Director of Medicine and Physician-in-Chief at The Johns Hopkins Hospital, succeeding William Osler. He established laboratories at Johns Hopkins for the study of infectious diseases, physiology, and chemistry. Barker specialized in the study of neurology, endocrinology, and internal medicine. He was highly regarded as a remarkable diagnostician. Barker received several honorary degrees, including one from the University of Toronto.

In 1903, he married Lilian Haines Halsey (1873–1961). He died on July 13, 1943, in Baltimore, Maryland.

Dr. Lewellys Franklin Barker was born in 1933, in Baltimore, Maryland.

He is an American physician. His grandfather, also named Lewellys F. Barker (1867–1943), was an esteemed physician and professor at Johns Hopkins University. The younger Barker attended Princeton University for his undergraduate studies and then Johns Hopkins University for medical school, graduating in 1959. He completed his internal medicine residency at Bellevue Hospital in New York City. Barker first came to the National Institutes of Health (NIH) in 1962 through the Public Health Service. He was assigned to the Laboratory of Virology and Rickettsiology in the Division of Biologics Standards (DBS). He worked first with Dr. Joseph Smadel on rickettsial vaccines, and then with Dr. Harry M. Meyer Jr., in the DBS Laboratory of Viral Immunology. After the administrative transfer of the DBS from the NIH to the Food and Drug Administration (FDA) in 1972, Barker moved to the Division of Blood and Blood Products where he worked from 1973 to 1978. He researched the hepatitis B virus and its test and vaccine. He then worked at the American Red Cross from 1978 to 1991. Barker returned to the NIH in 1991, working at the National Institute of Allergy and Infectious Diseases (NIAID) in the Division of AIDS.

After retiring from NIH in 1997, he worked at a pharmaceutical company and served as a medical consultant to several organizations. His research interests include infectious diseases, epidemiology, diagnosis, and passive and active immunization against viral and rickettsial diseases, with an emphasis on retroviruses, viral hepatitis, vaccinia, and epidemic typhus. Barker has received numerous awards throughout his career including the Public Health Service’s Meritorious Service Award, the President’s Award from the American Association of Blood Banks, and the Nevanlinna Medal from the Finnish Red Cross Society.

Sarah Gindall Barker was born in England and died in Massachusetts on 31 January 1803. She married William Hall and had a son with him, also William, born in August of 1838. She was widowed and remarried John Barker of London. They had a daughter together named Alice. In approximately 1755, Sarah migrated to Andover, Massachusetts with her son William in order to care for her widowed cousin, Joseph Gibson. In exchange for caring for him, Joseph Gibson made Sarah his heir. She lived the rest of her life in Andover, close to her son and grandchildren.

Maurice Willmore Barley was born on August 19, 1909, in Lincoln, England.

He was an English historian and archeologist specializing in medieval settlements and historic buildings. He was educated at Reading (Dip. Ed., 1932) and became a teacher at the University College, Hull, in the Department of Local History. He also taught local history and archaeology at adult education classes in Lindsey and East Yorkshire. The contact with the eminent folklorist Ethel Rudkin intensified Barley's interest in local history, and he began to publish about slate headstones, varieties of apples, architecture, and archaeology.

During World War II, Barley worked for the Ministry of Information. In 1946, he joined the Extra-Mural Department of the University of Nottingham. He became an Organising Tutor at the University College in Rural Nottinghamshire until 1962 when he became a Senior Lecturer in the Department of Classics, and Reader in Archaeology in 1965. In 1971, he was appointed Nottingham's first Professor of Archaeology. Barley organized major excavations of the Roman fort and town at Great Casterton, Rutland, and the medieval borough at Torksey, alongside minor excavations in Nottingham and Newark. At Nottingham, he developed his interest in medieval and vernacular architecture and obtained an M.A. in 1952. He published the book, “The English Farmhouse and Cottage” (1961) and “A Guide to British Topographical Collections” (1974). In 1951, Barley became actively involved in the development of the Council for British Archaeology, first as a member of the Executive Committee, then as Secretary (1954–1964). In 1966, he was appointed to the Royal Commission on the Ancient and Historical Monuments and Constructions of England. He served as President of the Vernacular Architecture Group (1957-1963) and Chairman of the York Archaeological Trust (1972-1990). He was also a Vice-President of the Society of Antiquaries of London and a Fellow of the Royal Historical Society. Barley retired from the university in 1974 but remained active in local and national heritage bodies and trusts, and worked on his autobiography, “The Chiefest Grain“ (1993).

In 1934, he married Mabel Gladys (Diana) Morgan (1910–2007). He died on June 23, 1991, in Nottingham, England.