WhoWasThisGuy logo

WhoWasThisGuy

Free online memorials, obituaries and biographies. Honor the people you lost, discover famous lives, and share the stories that deserve to live forever.

Navigation

  • Home
  • Lives
  • Browse by Country
  • Browse by Year
  • On This Day
  • About
  • FAQ

Legal

  • Privacy Policy
  • Terms of Service
  • Imprint
  • Cookies
  • Image Policy
  • Request Removal
  • Contact

WhoWasThisGuy. All rights reserved.

WhoWasThisGuy logoWhoWasThisGuy
  • Lives
  • On This Day
  • Browse by Country
  • Browse by Year
  • Lives
  • On This Day
  • Browse by Country
  • Browse by Year

Language

  1. Home
  2. Lives
  3. Died
  4. 1665
  5. January
Died
Born
In Memoriam

Who died in January 1665

1 memorial found

View all in Lives with filter applied
Pierre de Fermat

Pierre de Fermat

16071665

French mathematician and lawyer best known for Fermat's Last Theorem, early developments in calculus, and contributions to number theory, analytic geometry, probability, and optics