Leontine Nugent was born 30 November 1824 in Vincenza, Veneto, Italy to Laval Nugent von Westmeath (1777-1862) and Giovanna Riario Sforza (1797-1855) and died 15 August 1850 of unspecified causes. She married Oscar Grimaud d'Orsay (1824-1909) 17 May 1845 .
Children
| Name | Birth | Death | Joined with |
| Johanna Grimaud d'Orsay (1846-1936) | |||
Siblings
| Name | Birth | Death | Joined with |
| Albert von Nugent (1816-1896) | 25 September 1816 Naples, Metropolitan City of Naples, Italy | 31 July 1896 9, York-buildings Adelphi, London, London, England | Teresa Bachmann (1833-1916) |
| Beatrice von Nugent (1818-1880) | 12 January 1818 Naples, Metropolitan City of Naples, Italy | 26 April 1880 Vienna, Austria | Massimiliano Strozzi-Sagrati (1797-1860) Leopold von Croy (1827-1894) |
| Giovanna von Nugent (1821-1874) | 1821 Vincenza, Veneto, Italy | 15 January 1874 Florence, Tuscany, Italy | Antonio Pallavicini-Fibbia |
| Gilbert von Nugent (1822-1864) | 1 June 1822 Vincenza, Veneto, Italy | 2 November 1864 Naples, Campania, Italy | |
| Leontine von Nugent (1824-1850) | 30 November 1824 Vincenza, Veneto, Italy | 15 August 1850 | Oscar Grimaud d'Orsay (1824-1909) |
| Arthur von Nugent (1825-1897) | 17 March 1825 | 6 August 1897 Croatia | Marija Dittković von Zitomir (-1894) |