Leo has Allen Bathurst, 1st Earl Bathurst in his database, here:
http://www.genealogics.org/getperson.php?personID=I00004618&tree=LEO
The 1st Earl Bathurst is possibly an ancestor of Capt. Mark Phillips,
first husband of Princess Anne, depending on whether or not Richard
Cripps of London (1786-1867) was an illegitimate son of the 3rd Earl
Bathurst. He was never acknowledged as such by the 3rd Earl.
The 1st Earl Bathurst descends in 12 generations from Edward III, as
follows.
Edward III had
1) John of Gaunt, 1st Duke of Lancaster (1340-1399) m. 3) Katherine
Roet (c.1350-1403), and had
2) Joan Beaufort (c.1377-1440) m. 2) Ralph Neville, 1st Earl of
Westmorland (1364-1425), and had
3) Richard Neville, Earl of Salisbury (c.1398-1460) m. Alice Montagu
(1406-1462, descended from Edward I), and had
4) Alice Neville (c.1434-aft.1503) m. Henry Fitzhugh, 6th Lord
Fitzhugh (1429-1472), and had
5) Elizabeth Fitzhugh (1462-bef.1407) m. 1) Sir William Parr of Kendal
(1434-1483), and had
6) William Parr, Baron Parr of Horton (c.1480-1546) m. Mary Salisbury
(1484-1555), and had
7) Maud Parr (c.1507-1559) m. Sir Ralph Lane of Orlingbury
(1509-1540), and had
8) Frances Lane m. Sir George Turpin of Knaptoft (1529-1583), and had
9) Sibella Turpin (d. 1624)* m. 1) Edward Villiers of Hothorpe Hall
(d. 1600), and had
10) Elizabeth Villiers (c.1595-1650) m. George Bathurst of Hothorpe
Hall (c.1586-1656), and had
11) Sir Benjamin Bathurst of Paulerspury (1638-1704) m. Frances Apsley
(1653-1727, descended from Edward I), and had
12) Allen, 1st Earl Bathurst (1684-1775)
*Per the Villiers pedigree in the 1619 Visitation of Leicesteshire,
the wife of Edward Villiers of Hothorpe Hall was "Sibell Da. of ---
Turpin sister to Sr George Turpin Kt":
http://www.archive.org/stream/visitationcount09britgoog#page/n49/mode/2up
Per John Harwood Hill's 1875 book 'The History of Market Harborough',
"In 1600 Edward Villiers died possessed of this manor [Hothorpe]. He
married Sibella, daughter of William Turpin, of Knaptoft, Esq...Mr.
Villiers left three daughters and co-heirs. Mary, aged 16 (who, in the
Inquisition, is called the wife of Calcott Chambre); Jane, aged 8,
afterwards the wife of John Deynham; and Elizabeth, aged 7, who, in
1610, was married to George Bathurst, Esq., Alderman of London, and
the re-builder of Franks, in the parish of Horton Kirby, Kent. The
widow of Mr. Villiers was re-married to Ralph Kettell, D.D., President
of Trinity College, Oxford" [pp. 284-285]:
http://books.google.ca/books?id=7PxGAQAAIAAJ&printsec=frontcover&source=gbs_ge_summary_r&cad=0#v=onepage&q=Hothorpe&f=false
There is no pedigree of Turpin in the published 1619 Visitation of
Leicestershire. In 'The History & Antiquities of the County of
Leicester' Volume 4 (1), Nichols has a pedigree of Gobion and Turpin
of Knaptoft, which he says is "continued from the Visitation of 1619".
In his pedigree, Nichols makes "Sibilla = Edward Villiers, of
Hothorpe, co. Northampton", a daughter of John Turpin of Knaptoft (d.
1530) & Rose Ruthall [p. 262 - p. 225 in book]:
http://cdm16445.contentdm.oclc.org/cdm/compoundobject/collection/p15407coll6/id/3401
It is chronologically impossible for Sibella Turpin to be the daughter
of a man who died in 1530, and in turn be the mother of girls who were
returned as ages 16, 8 & 7 in their father's IPM taken in 2 James II
[1604-05]. Instead, it would seem that Sibella should be the married,
unnamed daughter that Nichols assigns in his pedigree to George Turpin
& Frances Lane. Per the bio of Sir George Turpin in HOP, he was born
posthumous in 1529, and died in 1583:
http://www.historyofparliamentonline.org/volume/1558-1603/member/turpin-george-1529-83
The HOP bio of Sir George's son Sir William Turpin of Knaptoft has him
born about 1558, and dead in 1617:
http://www.historyofparliamentonline.org/volume/1558-1603/member/turpin-william-1558-1617
Since Sibella Turpin bore her eldest daughter Mary Villiers in about
1589, she was likely born in the latter half of the 1560s, making her
chronologically a daughter of Sir George Turpin (b. 1529), rather than
of Sir William Turpin (b. c.1558).
Per his ODNB bio, Ralph Kettell (1563-1643), President of Trinity
College Oxford, had an "infant daughter buried two days after her
baptism" in 1606, and a (unnamed in the bio) wife "perhaps his second"
buried at St Mary Church, Garsington, Oxfordshire on 19 February 1624.
Per the 1889 book 'History of the Apsley & Bathurst Families' by Julia
Alexander Hankey, "George Bathurst met his wife [Elizabeth Villiers]
while pursuing his studies at Oxford, where she lived with her mother
and her step-father Dr. Kettel, the President of Trinity College. She
was only 14 years old when she married":
http://archive.org/stream/historyofapsleyb00hank#page/42/mode/2up
Given the above facts, it seems natural that it was Sibella Turpin who
bore Ralph Kettell the daughter in 1606, and who died in 1624.
Cheers, ------Brad