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Charles Santiago Sanders Peirce
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This article is about the adopted name of Charles Sanders Peirce. For the main discussion of Peirce, see Charles Sanders Peirce.
Charles Santiago Sanders Peirce was the adopted name of Charles Sanders Peirce (September 10, 1839 – April 19, 1914), an American philosopher, logician, mathematician, and scientist. Peirce's name appeared in print as "Charles Santiago Peirce" as early as 1890. Starting in 1906 he used "Santiago" in many of his own articles. There is no well-documented explanation of why Peirce adopted the middle name "Santiago" (Spanish for Saint James) but speculations and beliefs of contemporaries and scholars focused on his gratitude to his old friend William James and more recently on Peirce's second wife Juliette (of unknown but possibly Spanish Gypsy heritage).