What is "gessner"

Gessner is a surname. Notable people with the surname include:

• Conrad Gessner (1516–1565), Swiss naturalist, bibliographer, botanist, physician and classical linguist
• David Gessner (born 1961), American essayist, memoirist, nature writer, editor, and cartoonist
• Johannes Gessner (1709–1790), Swiss mathematician, physicist, botanist, mineralogist and physician
• Nicolas Gessner (born 1931), film director
• Salomon Gessner (1730–1788), painter