On This Day

Famous People Who Died in September 1869

Person of interestPeter Mark Roget

Sep 12 Peter Mark Roget, British lexicographer (Roget's Thesaurus) and inventor (slide rule, pocket chessboard), dies at 90

Lexicographer and Inventor Peter Mark Roget
Lexicographer and Inventor
Peter Mark Roget
  • Sep 28 Guglielmo Libri, Italian mathematician, dies at 66