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