Jean le Rond d'Alembert
16 November 1717 — 29 October 1783
Jean Le Rond d'Alembert was a French mathematician, physicist, philosopher, and music theorist. Until 1759 he was, together with Denis Diderot, a co-editor of the Encyclopédie. His most famous achievements include the wave equation, also known as d'Alembert's equation, and D'Alembert's formula for solving said equation. In French, fundamental theorem of algebra is named in his honour.
A memorial on Digital Cemetery, an endless map you can explore. This grave stands at coordinates -16, 18.