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Villiers, Mary Countess of Inchiquin
- 1753( = Descendancy chart to this point, = Expand, = Collapse)
- 1 Villiers, Mary Countess of Inchiquin [1] d. 17 Apr 1753
- O'Brien, William 3rd Earl of Inchiquin b. Abt 1666 d. 24 Dec 1719
- 2 O'Brien, Hon James [1.1] b. 1695 d. 17 Dec 1771
- Jephson, Mary b. Abt 1700 d. 6 Mar 1760
- 3 O'Brien, Murrough 1st Marquess of Thomond [1.1.1] b. Abt 1726 d. 10 Feb 1808
- O'Brien, Mary 3rd Countess of Orkney (suo jure) Marchioness of Thomond b. Abt 1721 d. 10 May 1791
- 4 O'Brien, Mary [1.1.1.1] b. 4 Sep 1755 d. 30 Dec 1831 [ =>]
- + Palmer, Mary Marchioness of Thomond b. Abt 1750 d. Abt 1820
- O'Brien, Mary 3rd Countess of Orkney (suo jure) Marchioness of Thomond b. Abt 1721 d. 10 May 1791
- 3 O'Brien, Edward [1.1.2] b. 1736 d. Mar 1801
- Carrick, Mary b. Abt 1749 d. Mar 1801
- 4 O'Brien, Capt Lord Edward [1.1.2.1] b. Abt 1780 d. 9 Mar 1824
- Carrick, Mary b. Abt 1749 d. Mar 1801
- 3 O'Brien, Murrough 1st Marquess of Thomond [1.1.1] b. Abt 1726 d. 10 Feb 1808
- Jephson, Mary b. Abt 1700 d. 6 Mar 1760
- 2 O'Brien, Hon James [1.1] b. 1695 d. 17 Dec 1771
- O'Brien, William 3rd Earl of Inchiquin b. Abt 1666 d. 24 Dec 1719