Robert D'Arcy, 4th Earl of Holderness
Est 1720 - 1778 (58 years)(
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- 1 Robert D'Arcy, 4th Earl of Holderness [1] b. Est 1720 d. 1778
- Mary Doublet b. Est 1720 d. Yes, date unknown
- 2 Amelia D'Arcy, Baroness Conyers, de jure Baroness Darcy de Knayth [1.1] b. 12 Oct 1754 d. 26 Jan 1784
- + Francis Godolphin Osborne, 5th Duke of Leeds b. 29 Jan 1751 d. 31 Jan 1799
- Captain John Byron b. 7 Feb 1756 d. 2 Aug 1791
- 3 Augusta Byron [1.1.1] b. Abt 1784 d. Nov 1851
- + Lt. Colonel Leigh d. Yes, date unknown
- + Lt. Colonel Leigh d. Yes, date unknown
- 3 Augusta Byron [1.1.1]
- + Francis Godolphin Osborne, 5th Duke of Leeds b. 29 Jan 1751 d. 31 Jan 1799
- 2 Amelia D'Arcy, Baroness Conyers, de jure Baroness Darcy de Knayth [1.1]