(b. 1687) October 18 – Sarah Churchill, Duchess of Marlborough, English friend of Anne, Queen of Great Britain (b. 1660) October 31 – Leonardo Leo, Italian composer (b. 1694) December 8 – Marie Anne de Mailly-Nesle, French mistress of King Louis XV (b. 1717) December 23 – Élisabeth Charlotte d'Orléans, duchess and regent of Lorraine (b. 1676) date unknown – Catherine Jérémie, French-Canadian botanist (b. 1644) References Leap years in the Gregorian calendar