Famous Celebrity born in 1718 Jean Joseph Marie Amiot (75 years)Landgravine Caroline of Hesse-Rotenburg (23 years)Friedrich Wilhelm Marpurg (77 years)Maria Gaetana Agnesi (81 years)Duke Louis Ernest of Brunswick-Lüneburg (70 years)Vito D'Anna (51 years)Robert Sandeman (theologian) (53 years)William Hunter (anatomist) (65 years)Grand Duchess Natalia Petrovna of Russia (1718â1725) (7 years)Mariana Victoria of Spain (63 years)Alexander Roslin (75 years)Hedvig Charlotta Nordenflycht (45 years)David Brainerd (29 years)