Matthew Flinders (1774-1814)
Mar 16 English explorer, navigator and cartographer who was 1st to circumnavigate Australia, born in Donington, England [1]
- Apr 21 Jean-Baptiste Biot, French physicist (Biot-Savart law), born in Paris (d. 1862)
- Apr 26 Christian Leopold von Buch, German geologist and paleontologist, born in Stolpe an der Oder, Margraviate of Brandenburg, Prussia (d. 1853)
- Apr 28 Francis Baily, English astronomer and describer of "Baily's Beads" during solar eclipse, born in Newbury, Berkshire, England (d. 1844)
- May 7 William Bainbridge, American naval officer, born in Princeton, New Jersey (d. 1833)
- May 27 Francis Beaufort, Irish admiral and hydrographer (Beaufort wind force scale), born in Navan, County Meath, Ireland (d. 1857)
- Jun 2 William Lawson, English born explorer of New South Wales, Australia, born in Finchley, England (d. 1850)
- Jun 21 Daniel D. Tompkins, American politician, 6th US Vice President (1817-25), born in Scarsdale, New York (d. 1825)
- Jun 23 Matthijs Siegenbeek, Dutch linguist (spelling)
- Jun 24 François-Nicolas-Benoît Haxo, French Army general, born in Lunéville, France (d. 1838)
- Jul 20 Auguste Marmont, French marshal, born in Châtillon-sur-Seine, France (d. 1852)
- Aug 12 Robert Southey, English writer (The Story of the Three Bears), Poet Laureate (1813-43) and biographer (Nelson), born in Bristol, England (d. 1843)
Meriwether Lewis (1774-1809)
Aug 18 American explorer, soldier and public administrator who helped lead the Lewis and Clark Expedition, born in Ivy, Virginia
Elizabeth Ann Seton (1774-1821)
Aug 28 1st American Catholic saint (canonized 1975), born in NYC, New York
- Sep 8 Anna Katharina Emmerick, Roman Catholic Augustinian Canoness Regular of Windesheim, Marian visionary, ecstatic and stigmatist, born in Coesfeld, Westphalia, Holy Roman Empire (d. 1824)
- Sep 14 Lord William Henry Cavendish Bentinck, British soldier and statesman (Governor-General of India, 1828-1835), born in Buckinghamshire, England (d. 1839)
- Sep 17 Giuseppe Caspar Mezzofanti, Italian cardinal, linguist and hyperpolyglot (understood 70 languages), born in Bologna, Italy (d. 1849)
- Sep 26 Johnny Appleseed [John Chapman], American pioneer nurseryman (introduced apple trees to Pennsylvania, Ontario, Ohio, Indiana, and Illinois), born in Leominster, Massachusetts (d. 1845)
- Oct 14 Hubert Matthijs Adriaan Jan van Asch van Wijck, Dutch lawyer and politician, born in Utrecht, Netherlands (d. 1843)
- Oct 18 Adolf Muller, German dramatist and critic, born near Weissenfels (d. 1829)
- Nov 18 Wilhelmine of Prussia, Queen of the Netherlands (1815-37), born in Potsdam, Prussia (d. 1837)
- Nov 24 Thomas Dick, Scottish scientific teacher and writer (d. 1857)
- Dec 30 Pieter G. Witsen Geysbeek, Dutch historian (d. 1833) [or Dec 31]