Notes:

Hastings was the illegitimate son of Francis Hastings, 10th Earl of Huntingdon, and an unknown mother who was in fact a famous French courtesan, la demoiselle Lany, "danseuse de l'Op?ra". He was born in Paris on 12 March 1752 and brought up in England

Died:
Hastings took his own life and had acorns buried with him in 1823

Family/Spouse: Parnell (of Willesley) Abney. Parnell (daughter of Thomas (Lord of Willesley) Abney and Parnell Villars) and died. [Group Sheet] [Family Chart]

1. Charles (Lord of Willesley) Abney-Hastings was born in 1792; died in 1858 in Dsp.
2. Frank Abney-Hastings was born in 1794; died in 1828 in Dsp.

Notes:

Hi Hamish,

I thought I should write your in regards to an error in your database onethe Internet.

You wrote:
Francis (10th Earl) HASTINGS (13 Mar 1728 - 2 Oct 1789)

EVENT: Info 2: died without children. Earldom suspended until claimed byHans Francis Hastings descendent of 2nd Earl in 1819 [1328]

This isn't exactly true. He d.s.p.l. (died without legitimate issue).However, he did have an illegitimate son as follows:

Lt. Gen. Sir Charles HASTINGS m. Lady Parnell ABNEY (daughter of ThomasABNEY, Esq., Lord of Willesley [1725-1791] & Parnell VILLARS [d.1798]).

Lt. Gen. Sir Charles HASTINGS committed suicide in 1830. He & LadyParnell ABNEY had issue:
Charles ABNEY-HASTINGS (1792-1858), Lord of Willesley
Frank ABNEY-HASTINGS (1794-1828)
The sons assumed the name ABNEY in order to be eligible to succeed totheir mother's estates. Both, however, d.s.p.

From "The Feudal History of the County of Derby" by John Pym YEATMAN(pub.1905 Moody Bros.), pp75-76:

"He [Thomas Abney, Lord of Willesley] left an only daughter Parnel. Shemarried Charles Hastings, an illegitimate son of the 10th Earl ofHuntingdon...he ended his unhappy carreer by shooting himself...LadyParnel Abney passed her days in seclusion at Willesley, afflicted bypartial blindness, and her son, although he had always declared that athis death the estate should revert to the family, in 1844 settled it uponan entire stranger to them, who was the sister of the last Marquis ofHastings...Sir Charles Hastings made it a condition, which the Cliftonfamily had no option to obey, since it was apparently made in accordancewith the wishes of his ancestors, from whom he derived the estates, thatthe holders of the Abney estate should take the name and arms of thatfamily [Abney]."

From the 1911 Edition Encyclopedia:
(pg.53) "When Francis, 10th earl of Huntingdon, died in October 1789, thebarony of Hastings passed to his sister Elizabeth (1731v1808), wife ofJohn Rawdon, earl of Moira, and from her it came to her son FrancisRawdon-Hastings (see below), who was created marquess of Hastings in1817."
(pg.54) "HASTINGS, FRANK ABNEY (1794v1828), British naval officer andPhilhellene, was the son of Lieut.-general Sir Charles Hastings, anatural son of Francis Hastings, tenth earl of Huntingdon."

from
R. Robert Abney Jr.
Centralized Abney Archives

Francis + As Yet Unknown. As and died. [Group Sheet] [Family Chart]

Notes:

Married:
1 _MSTAT Friends

Theophilus married Selina (of Ferrers) Shirley on 3 Jun 1728. Selina (daughter of Washington (2nd Earl of Ferrers) Shirley and Mary Levinge) died on 17 Jun 1791. [Group Sheet] [Family Chart]

Theophilus married Frances Fowler on 8 May 1690. Frances (daughter of Francis Leveson Fowler and Ann (of Kinderton) Venables) died on 26 Dec 1723. [Group Sheet] [Family Chart]

Washington married Mary Levinge about 1704. Mary (daughter of Sir Richard (1st Bt of Parwich) Levinge and Mary Corbyn) died in Jan 1740. [Group Sheet] [Family Chart]