- male, deceased (1943)
- Jens Otto Harry Jespersen or Otto Jespersen (July 16, 1860-April 30, 1943) was a Danish linguist who specialized in the grammar of the English...
- male, deceased (1914)
- Louis Couturat (January 17, 1868 - August 3, 1914) was a French logician, mathematician, philosopher, and linguist.
- male
- Marquis Louis de Beaufront was a major influence in the development of Ido, an international auxiliary language. Beaufront was initially an...
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