| HUMBOLDT | German naturalist and explorer 1769-1859 (8) |
| ALEXANDER | ___ von Humboldt, a German naturalist and scientist (9) |
| REYNOLDS | English portrait painter and founder of the Royal Academy, knighted in 1769 (8) |
| NAPOLEON | French military leader born in Ajaccio in 1769 (8) |
| IRONDUKE | Nickname given to Arthur Wellesley (1769-1852) (4,4) |
| CUVIER | French naturalist and zoologist (1769-1832) |
| OKENS | Noted German naturalist Lorenz and family |
| LEISLERSBAT | Insectivore named after a German naturalist born in the late 18th century (8,3) |
| STELLER | Georg Wilhelm ___, the 18th-century German naturalist (7) |
| LEISLER | A small black bat named after a German naturalist (7) |
| DURRELL | Naturalist and zoologist who penned The Bafut Beagles, My Family and Other Animals, Menagerie Manor and The Aye-Aye and I (7) |
| PUFFADDER | Africa's widespread Bitis arietans, described by German naturalist Blasius Merrem in 1820 (4,5) |
| HUDSON | Naturalist and ornithologist who wrote books including Green Mansions, Far Away and Long Ago and A Shepherd's Life (6) |
| JAMES | Scottish engineer and inventor who patented 'A new method of lessening the consumption of steam and fuel in fireengines' in 1769 (5) |
| WATT | Scottish engineer and inventor who patented 'A new method of lessening the consumption of steam and fuel in fireengines' in 1769 (4) |
| BONAPARTE | Napoleon ___, French military and political leader, 1769-1821 (9) |
| DEBRETTSPEERAGE | Compendium of British noble families, first published in 1769 (8,7) |
| MERIAN | Naturalist and entomologist noted for her accurate watercolours of insects and plants who was one of the first to document the metamorphosis of the butterfly (6) |
| DARWIN | Naturalist and Australian city (6) |
| ODDIE | Bill ___, television naturalist and comedian born in 1941 (5) |
