Family trees: 

• Inner Grenvilles: including the Dukes
• Outer Grenvilles. 

George

• See Nugent Buckingham

Charlotte [Watkin Wynn]

• Married Watkin Williams Wynne
• More on Charlotte

Catherine [Neville]

• Born 23 November 1762
• Married Richard Aldworth Neville Griffin, 19 June 1790
• Died 18 November 1794
• More on Catherine

Elizabeth [Proby]

Was the last of Mr. George Grenville’s daughters to marry. She became Lady Carysfort in 1787, and her husband was advanced a step in the Peerage in 1789, in like manner as his brother-in-law, Fortescue. He was a widower with five children; by his second marriage he had one son, who died an infant, and three daughters. [Leighton]

• Born: 24 October 1756
• Married: 12 April 1787 to John Joshua Proby, the 2nd Baron Carysfort of Elton Hall, Huntingtonshire
• 3 daughters
• Died: 21 December 1842

Hester [Fortescue]

Born in 1760, married Hugh, third Baron Fortescue, raised in 1789 to the Earldom. Her eldest son, Hugh, known in this Correspondence by his courtesy title of Ebrington, was the same age as his cousins Richard Neville and Henry Williams Wynn, and shared their tastes and interests. The friendship between the three was very intimate, as the letters to Henry from both of them as boys and young men testify.

George, the second son, was chosen, as already indicated, by his uncle and aunt, Lord and Lady Grenville, to be their heir. John, the. third son, entered Holy Orders. Of the six daughters, five married, but these ladies hardly appear at all in the Correspondence. [Leighton]

• Born: 1758 (one source gives 23 November 1760)
• Married: 1782 to Hugh Fortescue of Castle Hill, Devonshire
• 9 children:
  • Hugh (Lord Ebrington: 1783-1861)
  • Hester (c. 1785-1873)
  • George Matthew (1791-1877)
  • John (1796-1869)
  • Catherine
  • Anne
  • Mary
  • Eleanor
  • Elizabeth (1801-1867)
• Died: 13 November 1847 at Wear Hall, Weare Giffard, Devonshire

Thomas Grenville

• Born: 1755
• Died: 1856
• More on Thomas Grenville

William Wyndham Grenville

• Born: 1759
• Died: 1834
• More on William Wyndham

Richard Grenville

• Died 1759, perhaps very young