Robert Lucas was born in 1846, the son of Dr John Lucas. He graduated MD from the University of Edinburgh in 1870 and was admitted as a Member of the Royal College of Physicians of Edinburgh in 1878, becoming a Fellow in 1892. He was also a member of the Medico-Chirurgical Society and the Obstetrical Society of Edinburgh. He entered military service in 1869 and was appointed Assistant Surgeon to the Edinburgh County Militia, later rising to the rank of Surgeon-Lieutenant-Colonel. He lived for much of his life in Dalkeith, where he was active in civic affairs, serving on the School Board and as Provost from 1902. He died in 1905.

Robert Fraser Calder Leith was born in 1854 and graduated MB CM with first-class honours from the University of Edinburgh in 1885. He briefly studied law before specialising in pathology, which he taught at the Edinburgh Royal Infirmary. He became a Member of the Royal College of Physicians of Edinburgh in 1891 and a Fellow in 1892. He lectured in pathology at the Edinburgh School of Medicine from 1892 to 1899 before being appointed Professor of Pathology and Bacteriology at Mason Science College, University of Birmingham. He held this post for twenty years and also served as Examiner for several universities. He died in North Berwick in 1936.

Robert Alexander Fleming was born in Dundee in 1862. He graduated MB CM with first-class honours from the University of Edinburgh in 1888 and completed postgraduate study in Vienna and Berlin, earning his MD with a gold medal in 1896. From 1897 to 1927 he worked at the Edinburgh Royal Infirmary, initially as Pathologist and later as Senior Physician. After retirement, he continued as Consulting Physician for a further twenty years. He served in the Royal Army Medical Corps during the First World War. He was admitted as a Member of the Royal College of Physicians of Edinburgh in 1891 and elected a Fellow in 1892, later serving as President from 1927 to 1929. He died in 1947.

Alexander Lockhart Gillespie was born in 1865 into a prominent medical family, being the grandson of Sir Alexander Morison, former President of the Royal College of Physicians of Edinburgh. He studied at the Universities of Berlin and Prague and graduated MD with a gold medal from the University of Edinburgh in 1888. He became a Member of the Royal College of Physicians of Edinburgh in 1891 and a Fellow in 1892 and served as President of the Royal Medical Society of Edinburgh. He worked as a Medical Referee for several Edinburgh institutions and insurance organisations and contributed articles to medical journals and the Encyclopaedia Britannica. He served as Medical Registrar at Donaldson's Hospital and the Royal Infirmary until his death in 1904.

Francis Darby Boyd was born in Edinburgh in 1866, the son of John Boyd, publisher of the Edinburgh Medical Journal. He graduated MD with a gold medal from the University of Edinburgh in 1893 and worked as Tutor and Physician at the Royal Infirmary of Edinburgh. He became a Member of the Royal College of Physicians of Edinburgh in 1891 and a Fellow in 1892. During the Second Boer War he served as Physician in Charge of a Scottish hospital in South Africa and later joined the Royal Army Medical Corps, attaining the rank of Lieutenant-Colonel. He was appointed Professor of Clinical Medicine at the University of Edinburgh in 1919 and died in 1922.

Frederick Royston Fairbank was born in 1841. He became a Licentiate of the Royal College of Physicians of London in 1862 and earned his MD from the University of Heidelberg in 1865. He was admitted as a Member of the Royal College of Physicians of Edinburgh in 1874 and elected a Fellow in 1892. He practised for many years in Doncaster, where he also served as Surgeon to the Doncaster General Infirmary and as Surgeon-Captain in the Yorkshire Dragoons Yeomanry. He published articles in The Lancet and the British Medical Journal. In later life he pursued interests in architecture and archaeology and was elected a Fellow of the Society of Antiquaries in 1888. He died in 1913.

Thomas Proudfoot was born in Edinburgh in 1842. After initially training as a watchmaker, he turned to medicine in 1875 and earned his MB CM from the University of Edinburgh in 1880. He moved to Newbiggin-by-the-Sea to work as the sole physician in a colliery practice, where he managed a smallpox outbreak. Shortly afterwards, illness resulted in the loss of one eye and impairment of the other, forcing him to abandon practice. He returned to Edinburgh and graduated BSc in Public Health in 1889. In the same year he was admitted as a Member of the Royal College of Physicians of Edinburgh and was elected a Fellow in 1892. He later served as Deputy Medical Officer of Health for the Lothians and as Visiting Physician at Slateford Hospital. He died in 1912.

John Keay studied at the Universities of Glasgow and Vienna, graduating MB CM in 1881 and MD in 1888. He began his career at the Glasgow Royal Infirmary and later served as Medical Superintendent at Mavisbank House Asylum and Inverness District Asylum. From 1904 he worked at Bangour Institution, later renamed the Edinburgh War Hospital in 1915. He served in the Royal Army Medical Corps, attaining the rank of Lieutenant-Colonel. He published extensively on mental disorders and their treatment. He became a Member of the Royal College of Physicians of Edinburgh in 1890 and was elected a Fellow in 1892. He served as President of the Medico-Psychological Association in 1918 and was awarded an MBE in the 1919 Birthday Honours.

George Matthew Robertson was born in 1864 and graduated MB from the University of Edinburgh in 1885 and MD in 1913. He worked as Resident Physician at the Edinburgh Royal Infirmary, Bethlem Royal Hospital in London, and the National Hospital in London. He was appointed Assistant Physician at the Morningside Asylum, Edinburgh, followed by posts at several Scottish asylums. In 1908 he returned to Edinburgh as Superintendent of the Morningside Asylum. He also established a number of nursing homes in Edinburgh for patients with less severe mental illness. He died in Edinburgh in 1932.

Robert Thin was born in Edinburgh, the youngest surviving son of James Thin, founder of James Thin, Booksellers. He was educated at the Royal High School and the University of Edinburgh, graduating MA in 1883 and MB CM in 1887. After graduation he served as House Surgeon to Professor John Chiene and House Physician to Dr John Wylie at the Royal Infirmary of Edinburgh, followed by a residency at the Royal Hospital for Sick Children, Edinburgh.