Biography
James FitzGerald, 1st Duke of Leinster, 20th Earl of Kildare, was born 29 May 1722 in Carton House, Maynooth, County Kildare, Ireland to Robert FitzGerald, 19th Earl of Kildare (1675-1744) and Mary O'Brien (1692-1780) and died 19 November 1773 Dublin, Ireland of unspecified causes. He married Emilia Mary Lennox (1731-1814) 7 February 1747 in London, Greater London, England, United Kingdom.
Children
| Name | Birth | Death | Joined with |
| George FitzGerald (1748-1765) | |||
| William Robert FitzGerald, 2nd Duke of Leinster (1749-1804) | 13 March 1749 London, Greater London, England, United Kingdom | 20 October 1804 Carton House, Maynooth, County Kildare, Ireland | Emilia Olivia St. George (1753-1798) |
| Caroline FitzGerald (1750-1754) | |||
| Emily Maria Margaret FitzGerald (1751-1818) | |||
| Henrietta FitzGerald (1753-1763) | |||
| Caroline FitzGerald (1755-1755) | |||
| Charles James FitzGerald, 1st Baron Lecale (1756-1810) | |||
| Charlotte Mary Gertrude FitzGerald, Baroness Rayleigh (1758-1836) | |||
| Louisa Bridget FitzGerald (1760-1765) | |||
| Henry FitzGerald (1761-1829) | 30 July 1761 | 9 July 1829 Boyle Farm, Thames Ditton, Surrey, England, United Kingdom | Charlotte Boyle-Walsingham, 21st Baroness de Ros (1769-1831) |
| Sophia Sarah Mary FitzGerald (1762-1845) | |||
| Edward FitzGerald (1763-1798) | |||
| Robert Stephan FitzGerald (1765-1833) | |||
| Gerald FitzGerald (c1766-1788) | |||
| Augustus FitzGerald (1767-1771) | |||
| Fanny FitzGerald (1770-1775) | |||
| Lucy Anne FitzGerald (1771-1851) | |||
| Louisa FitzGerald (1772-1776) | |||
Footnotes (including sources)
| ‡ General |
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