Lewis White Williams was born on December 20, 1804, in East Goshen Township, Chester County, Pennsylvania.

He was a mineralogist and geologist. When the Chester County Cabinet of Natural Sciences was organized in 1826, he became one of its earliest and ardent members and chose mineralogy for his field of study. He collected and distributed many specimens from West Chester, Chester County, Pennsylvania. Williams also participated in expeditions into the neighbouring states and territories. In 1857, he was appointed assistant geologist and naturalist of The Camel Expedition to explore the territory from Texas to California. Williamsite, a variety of precious serpentine, was named after him in honour of his discovery.

He died on September 19, 1873, in West Goshen Township, Chester County, Pennsylvania.

Rev. James William Williams was born on September 15, 1825, in Overton, Hampshire, England.

He was a Canadian Church of England priest, bishop, and educator. He graduated from Pembroke College, Oxford University (M.A. in classics and mathematics, 1852). He was ordained deacon in 1852 and priest in 1855. Williams immigrated to Canada in 1857 and was appointed rector of the Lennoxville grammar school, affiliated with Bishop’s College, Lennoxville. He also served as the chairman of King's Hall, Compton. In 1860, he became a professor at Bishop's College. In 1863, he was appointed the 4th Bishop of Quebec and remained in this position until he died in 1892. Rev. Williams participated vigorously in the development of the Protestant public school system in Quebec and collaborated with Sir Alexander Galt in drawing up Section 93 of the British North American Act (Constitution Act, 1867), which conferred upon Parliament the responsibility of protecting the educational rights of minorities. Many of his sermons and lectures were published.

In 1854, he married Anna Maria Waldron (1821–). He died on April 20, 1892, in Quebec City, Quebec.

John Whitridge Williams was born on January 26, 1866, in Baltimore, Maryland.

He was a pioneering obstetrician and author. He graduated from the Johns Hopkins University (B.A., 1886) and University of Maryland School of Medicine (M.D., 1888). He continued his studies in bacteriology and pathology at universities in Vienna and Berlin. Returning to Baltimore in 1889, he joined the newly opened gynaecological‐obstetric department at Johns Hopkins Hospital as a voluntary assistant, helping in both the clinical and pathology departments. In 1892, he was admitted to the American Gynecological Society and in 1893, he was appointed Associate Professor of Midwifery at Johns Hopkins Hospital. In 1894–1895, he again went abroad, studying obstetrics and pathology in Leipzig, Prague, and Paris. Back at Johns Hopkins in 1899, he was promoted to Professor in Obstetrics and obstetrician‐in‐chief at the hospital. In 1903, Williams published his textbook “Obstetrics.” This beautifully illustrated work included some 1100 references from the European literature, mainly from Germany, Austria, and France. The textbook, regarded as a classic, passed through six editions during his lifetime. He also published numerous articles in various medical journals. Williams received honorary degrees from the University of Dublin (ScD., 1912) and the University of Pittsburgh (LL. D, 1915). He also served as honorary president of the Glasgow Gynaecological and Obstetric Society in 1911–12; he presided over the American Gynecological Society in 1914–15, the American Association for the Study and Prevention of Infant Mortality in 1914–16, and the Medical and Chirurgical Faculty of Maryland in 1915–16. On the day of his funeral, one of the first Honorary Fellowships granted by the British College of Obstetrics and Gynaecology was conferred on him.

In 1891, he married Margaretta Steward Browne (1865–1929), and in 1930, he remarried Caroline Theobald Pennington, his long-timed valued laboratory assistant. He died on October 21, 1931, in Baltimore, Maryland.