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.

Alfred Ernest Barlow was born on June 17, 1861, in Montreal, Quebec. He was a geologist, studying the geological relations and composition of the nickel and copper deposits in Eastern Ontario. He died on May 29, 1914, at sea (Gulf of St. Lawrence).

Dr. Horace Mallinson Barlow was born in 1884 in Fenton, Staffordshire, England.

He was a physician and librarian. He served as an assistant librarian of the Royal College of Physicians in London from 1907 to 1923 and as a Secretary from 1923 to 1944. He is the author of the books "The Medical Library Association: A Few Observations" (1910) and "Old English Herbals, 1525-1640" (1913). In 1912, he compiled "Royal College of Physicians of London: Catalogue of the Library." The Royal College of Physicians archives hold a collection of 2,300 bookplates of medical men collected by Dr. Barlow.

He died on June 21, 1954, in West Worthing, England.

Sir Thomas Barlow, 1st Baronet, was born on September 4, 1845, in Edgeworth, Lancashire, England.

He was a British royal physician known for his research on infantile scurvy. He graduated from University College London with a B.M. in 1873 and an M.D. in 1874. He first worked as a registrar at Great Ormond Street Hospital and later became a physician and consultant in 1899. From 1895 to 1907, he served as a Professor of Pediatrics and Clinical Medicine at University College London. In 1883, his research proved that infantile scurvy was identical to adult scurvy. Barlow's disease, also known as infantile scurvy, is named after him.

Sir Barlow served as a Royal Physician to Queen Victoria, King Edward VII, and King George V. He was knighted as a Knight Commander of the Royal Victorian Order in 1901 and created a Baronet of Wimpole Street in St. Marylebone, London in 1902. He also served as President of the Royal College of Physicians from 1910 to 1914 and delivered their Harveian Oration in 1916 on the subject of Harvey, The Man and the Physician. In 1918, he was elected a Foreign Honorary Member of the American Academy of Arts and Sciences. Sir Barlow received the honorary degree of Doctor of Science (D.Sc.) from the Victoria University of Manchester in 1902. He was also listed as honorary medical staff at King Edward VII's Hospital for Officers in 1904.

In 1880, he married Ada Helen Dalmahoy (1843–1928). He died on January 15, 1945, in London, England.