- Mar 11 Isaac Elsevier, Dutch book publisher (House of Elzevir), born in Leiden (d. 1651)
René Descartes (1596-1650)
Mar 31 French philosopher (he thought, therefore he was), born in Descartes, Indre-et-Loire, France
Mar 31 French philosopher (he thought, therefore he was), born in Descartes, Indre-et-Loire, France