Mar 7 Baron de Breteuil, French statesman (d. 1807)
Mar 11 Otto Friedrich Müller, Danish Naturalist who was a pioneer in the study of microorganisms including bacteria, diatoms, and infusoria, born in Copenhagen, Denmark (d. 1784)
Mar 27 Thomas Tyrwhitt, English classical scholar and critic, born in London (d. 1786)
Mar 31 Étienne Bézout, French mathematician (d. 1783)