Joachim Barrande was born on August 11, 1799, in Saugues, Haute Loire, France.

He was a French geologist and paleontologist. He studied engineering at the École Polytechnique and the École Nationale des Ponts et Chaussées in Paris. He worked as a tutor for the Duc de Bordeaux, who later became known as the Comte de Chambord, the grandson of Charles X. After the king's abdication in 1830, Barrande accompanied the royal exiles to England and Scotland, and later to Prague.

In Prague, he initially focused on engineering projects but soon developed an interest in fossils from the Lower Palaeozoic rocks of Bohemia. From 1840 to 1850, he studied these rocks, collected fossils, and documented approximately 3,500 species, including graptolites, brachiopods, mollusks, trilobites, and fish. Barrande supported the theory of catastrophism, as proposed by Georges Cuvier, and he rejected Charles Darwin's theory of evolution and the concept of species transmutation.

In 1852, he published the first volume of his significant work, "Système silurien du centre de la Bohême." Two additional volumes were published posthumously in 1887 and 1894. In recognition of his important research, the Geological Society of London awarded him the Wollaston Medal in 1857. He was elected to the American Philosophical Society in 1862, became a foreign member of the Royal Swedish Academy of Sciences in 1870, and was recognized as a Foreign Honorary Member of the American Academy of Arts and Sciences in 1875. Barrande bequeathed his extensive fossil collection to the National Museum in Prague. In 1884, the Barrande Rocks in Prague were named in his honour, and a large plaque bearing his name was placed at the site. In 1928, a district of Prague was named Barrandov in tribute to him.

He died on October 5, 1883, in Frohsdorf, Vienna, Austria.

Sir James William Barrett was born on February 27, 1862, in South Melbourne, Victoria, Australia.

He was an Australian ophthalmologist, academic administrator, and author. He was educated at the University of Melbourne (M.B., 1881; Ch.B., 1882) where he became the first secretary of the Medical Students' Society in 1880. In 1890, he founded the Australian Medical Journal in Melbourne. He worked for two years as a resident medical officer at the Melbourne Hospital where he became a strong advocate of antisepsis.

In 1883, he went to King’s College in London (M.R.C.S., 1884; F.R.C.S., 1887) where his professor G. F. Yeo remarked on his earnestness, quickness, assiduity, urbanity, and courtesy. Sir Barrett taught at King's College, Moorfields Ophthalmic Hospital and elsewhere, gaining his main source of income from coaching in physiology for F.R.C.S. examinations.
He visited Austria and Germany and developed a lifelong affection for German language, literature and music, together with an attachment to the scientific rationality and agnosticism of Thomas Huxley. He researched the anatomy of the mammalian eye, published seventeen papers, and decided to spend his life in London on investigative work, but in 1886, he was called back to Australia for family reasons.

He served as Vice-Chancellor of the University of Melbourne from 1931 to 1934, and then as Chancellor from 1935 to 1939. He was President of the British Medical Association from 1935 to 1936, and the inaugural president of the Victorian Town Planning and Parks Association, now the Town and Country Planning Association. He was a notable supporter of Jewish refugee migration to Australia by persons fleeing Nazism.

In 1888, he married Marian Rennick (1861–1939) and in 1940, he remarried Monica Ernestine Heinze (1889–1950). He died on April 6, 1945, in Toorak, Melbourne, Victoria, Australia.

Born in Brittany to a family of fishmongers, Alain Barrière was a French singer, active from the 1950s. His real name was Bellec. He studied engineering and while a student bought a guitar and started to write songs. He graduated in 1960 and moved to Paris to work. He began performing in the evenings at small clubs around the capital and won a song contest in 1961 with his song "Cathy". His style was chanson-based, and Barrière was soon signed to a recording contract and released singles, which allowed him to give up his job and make a modest living from music.

In 1963, his song "Elle était si jolie” was chosen as the French representative in the eighth Eurovision Song Contest in London and it became a best seller. His singing career reached its peak in the latter part of the decade with a string of hits establishing him as one of France's biggest stars and a sell-out live attraction. His most famous success was the song "Mon Vieux”.

In 1975 he opened a nightclub-restaurant in Brittany. It proved popular but he soon faced severe tax problems as a result of dubious advice. In 1977 he moved to the United States. Four years later he returned to France and made several failed comeback attempts.

After a period in Québec he went back to France. His career was unexpectedly rejuvenated in 1997 by the release of a CD containing remastered versions of his old hits. An album of new material also sold well. He published his autobiography in 2006 and continued to release both retrospective and newly recorded albums until his health failed and he died aged 84.

Richard Manliffe Barrington was born on May 22, 1849, at his family home of Fassaroe Bray, Co. Wicklow, Ireland.

He was an Irish naturalist and ornithologist with a delicate constitution and a keen interest in natural science from a young age. His education was primarily conducted at home, except for one year spent at a day school in Bray. He graduated from Trinity College Dublin with a Master of Arts in Experimental and Natural Science in 1870. In 1875, he was called to the bar but soon found work as a land valuer and farmer suited him better. After his father died in 1877, he became more involved in managing the family farm at Fassaroe. In 1882, he began a correspondence with lighthouse keepers on the migration of birds. The results from these exchanges were published in “The migration of birds as observed at Irish lighthouses and lightships” (1900) and included many new records for Ireland. His interests also encompassed native mammals, agriculture, meteorology, and Irish science and economics.

He travelled to Iceland in 1881, remote islands off Scotland in 1883, 1886, and 1890, and Switzerland in 1876 and 1882. Barrington earned a reputation as a mountain climber, having ascended several peaks in the Alps, including the Eiger in 1876, and he walked across the Rocky Mountains in 1884. Barrington was a leader of the Royal Irish Academy's Rockall expedition. His collection of bird specimens, stored in paper envelopes, is preserved in the National Museum of Ireland and the Ulster Museum. He was a Fellow of the Linnean Society and a member of both the British Ornithologists' Union and the British Association Committee.

In 1898, he married Lena Louisa Richarda Gyles (1863–1960). He died on September 15, 1915, near Fassaroe, Bray, Wicklow, Ireland.

Gregorio Barroeta Corbalan was born in 1831 in San Luis Potosí, Mexico.

He was a Mexican doctor, natural scientist, and teacher. In 1861, he graduated from the National School of Medicine in San Luis Potosí with a degree of Medical Surgeon and started to practice in his hometown. He was also a professor of physics and natural history at the Instituto Científico. In 1877, he became the director of the Meteorological Observatory and in 1879, director of the Natural History Museum; positions he held until his death. He was also interested in the botanical studies, especially the flora of his region. He has a violet named after him - Barroeta Setosa, Gray. He published numerous articles and reports in local newspapers as well as scientific organizations abroad. He was an honorary member of the Quebec Geographic Society and the Smithsonian Institute in Washington.

He died on October 25, 1906, in San Luis Potosí, Mexico.