Sources
1. William James Kerr, The Genealogical Tree of the Family of Jarrett, of Orange Valley, Jamaica, and Camerton Court, Co. Somerset.
2. Jean Besson, Martha Brae’s Two Histories: European Expansion and Caribbean Culture-Building in Jamaica, University of North Carolina Press, 61.
3. A Thomas Reid, along with Charles Bernard of St James, is one of the trustees of Sarah Newton Jarrett (John Jarrett’s half-sister) under the terms of her father’s will. But this Thomas Reid is from Hanover, not Trelawny.
4. According to WJK, the Reids were descended from the Reids of Collistown, Aberdeenshire. Apparently, Sarah Reid’s brother “married a Miss Myers, and it has been said that she was connected in some way with the Royal Family of Portugal ... Be this as it may, he and his wife resided in England, and rented a place called Wallington, in Norfolk, and at this time [the brother] was one of the richest commoners in the country.” More to the point than any putative Portuguese royal connection, one wonders if Mrs Reid was related to the rum Myers family.
7. WJK: “From certain documents in the hands of the Compiler, it appears that on examination into the affairs of the late Mr Jarrett, his estates were heavily mortgaged in respect of the marriage settlement on his daughters, who had each £10,000 on their respective wedding days. There was also a mortgage as to his son’s marriage settlement, and another to David Lyon and Co, the merchants, besides other debts to a considerable amount. Under these circumstances, in the interest of all concerned, it was decided not to force a sale of the West India estates, but to gradually liquidate the debts, as at this time, 1809, the Jamaica properties were worth about £20,000 per annum.

“The whole estate of the late Mr Jarrett was placed in the hands of his brother, Herbert Newton Jarrett, and Richard Shawe, of the firm of Shawe and Le Blanc, the family solicitors, as trustees, for a period of ten years or until such time as the debts should be paid, David Lyon and Co retaining their position as the merchants and keeping the estate accounts.

“Freemantle and the mansion in Portland Place, with the effects, were sold, and also 1800 acres of land in the parish of St Ann, Jamaica.

“By this arrangement, Mrs Jarrett retained her annuity, which was somewhat reduced, the carriages, horses, wines and such a portion of furniture as would enable her to furnish a smaller house, which she had taken in Queen Anne Street, London, giving up her rights to the houses of Freemantle or Portland Place. The son, Mr H.N. Jarrett, was secured £3000 a year, and the old servants received their annuities. It is almost needless to remark that the whole indebtedness was eventually liquidated both principal and interest.”
8. The inherited assets of the fictional Mr Darcy and his real-life counterparts would, of course, have been much greater than those of the Jarretts, including large country houses, their contents and substantial landholdings in Britain.
9. WJK: “About the year 1855, [a subsequent owner of Freemantle sold it] ... to a man named White for £20,000; he was a builder by trade. The mansion was pulled down, and the estate laid out in building lots and is now covered with houses. Not a vestige of the old place remains, except the lake, which is known by the name of the Italian Lake.” Freemantle is now a suburb of Southampton.

“Part of the marble used in the construction of the Marble Room is now in the entrance hall of Furzedown, Hythe, Southampton, the property of Henry Pigeon, Esq, and whenever the Compiler walks over that marble floor, he gives a kindly thought to the memory of Uncle John, who was ever good and kind to those of the name of Kerr.”
10. Geoffrey Pinto pointed out that this part of London around Harley Street, now better known for doctors, was popular with West Indian families - most famously, of course, the Barretts of Wimpole Street.
11. John Skinner, Journal of a Somerset Rector, 1803-1834, Howard & Peter Coombs, Kingsmead.
12. Unlike her daughter-in-law, whom he detested, Skinner seems to have been fond of the older Mrs Jarrett, whom he describes as “the good old woman”.
13. In what seems to be a slightly later, typescript version of the “Jarrett Book”, WJK gives a different version of Mrs Jarrett’s death: “The Compiler has since learnt that Mrs Jarrett, Sarah Reid, died in her own house in Queen Anne Street, London, under the following circumstances: Mr Richard Ashton had just come downstairs with his grandmother to the drawing room, and having seen that she was comfortably seated, placed her large Bible before her. She was apparently quite well and in good spirits, when suddenly her head fell forward and she was gone. Her end was peace!!”

Who to believe? Skinner was writing on the day itself and on the spot. The two versions are reconcilable if one assumes that Richard Ashton was confused in his memory about the place. Perhaps he was staying at Camerton, not Queen Anne Street, when all this happened.
14. WJK: “After the death of her father in 1790, [Sarah Newton Jarrett] became entitled to certain lands called Jarrett Hall, also Bloomsbury, a gift to her previous to his death. These properties were held in trust for her sole and separate use, but she had (with the consent of her trustees, Thomas Reid Esq of the Parish of Hanover and Charles Bernard Esq of the Parish of St James ...) power of sale, which she exercised ... [She] sold to her brother, Herbert Newton Jarrett, on 31 May 1791, the above named property of Bloomsbury, consisting of about 100 acres of land, for the sum of £4065.-And also that of Jarrett Hall, about 50 acres in the Parish of St James, for £1000.”
15. WJK: “Mr Jarrett purchased a small estate called Great Bromley Lodge, in Essex. This he intended for the use of his eldest son, but after his death the property was sold by his executor, his cousin William Rhodes James.”
16. There’s something about this description of Mary Noble Jarrett that puts me in mind of the older aunts in Galsworthy’s Forsyte Saga. Perhaps that’s what the Jarretts were in the end - an earlier version of the Forstytes.
18. Grove Place later became a prep school and is now the centrepiece of a “luxury retirement village”. There are pictures of it on the operating company’s website, and it looks beautiful. The Jarretts had a knack for living in good places.
22. My aunt, Christine Noble.
23. Milnthorpe was in the Sleepers Hill district in the west of Winchester: http://hantsgtrg.pbworks.com/w/page/16630123/Sleepers%20Hill.
25. Burke’s History of the Commoners of Great Britain and Ireland (1835)
26. For more about Thomas Penrice and Lord Chedworth, see Google Books.
27. The Knightleys and Wightwick Knightleys had been Lords of the Manor of Offchurch since 1542 during the Dissolution of the Monasteries. Marianne Wightwick Jarrett’s only brother, John Wightwick Knightley, had only one child, a daughter, Jane Wightwick Knightley, who married the 6th Earl of Aylesford. Through that connection, The Bury passed to the Earls of Aylesford. It is now a polo club.
28. WJK: “The following account of [Dick Meyler’s] funeral is taken from the Hampshire Chronicle of 16 March in that year:

“‘The remains of our late respected and deservedly lamented representative, Richard Meyler Esq, arrived in this city [Winchester] on Wednesday, and were deposited at the White Hart Inn, preparatory to interment in the family vault at Crawley. On Thursday, about 12 o’clock, the procession began to move, preceded by several tradesmen and others on horseback, anxious to pay the last sad token of respect to his memory. The hearse was drawn by six horses, followed by five mourning coaches and four, in which were some intimate friends of the deceased, the Aldermen of this city, etc. Several carriages brought up the rear, among which we noticed those of Lady Mildmay, Paulett St John Mildmay Esq, G. Ricketts Esq, Hart Davies Esq, MP for Bristol, the Chancellor of the Diocese, etc.

“‘Many others joined the procession on the road, and the whole reached Crawley about 2 o’clock where the last mournful solemnities being performed the body was consigned to the silent tomb amid the most sincere and unequivocal expressions of sorrow of all present; especially the neighbouring tenantry and the poor, who, by this afflicting calamity have been suddenly deprived of a good landlord and a kind benefactor.’”
30. See this website for a bit more about the Houghton Club.
31. Related presumably to the upcoming abolition of slavery.
32. According to WJK, this estate belonged to the Holmes family. The two Kerr brothers married two Holmes sisters, so they may have bought it from their father-in-law.
33. The following article appeared in a local newspaper after William Kerr’s death, headed, “WANTED A CUSTOS”: “The Parish of St James is without a Custos. Our late Custos, the Hon. W. Kerr, had for several years before his death retired from all public and political platforms. He was rightly Custos, being the most generally respected man in the parish. His death leaves a blank that it were best not to attempt to fill. The senior Magistrate is now Mr Alexander Rerrie of the firm of J.E. Kerr & Co. Mr Rerrie is about the only the man the honour of Custos would fittingly grace; but it is more than probable that if offered to him he would refuse. The first duty of a Custos is to head every subscription list started within the parish, and like the honour of Lord Mayor of London is not a cheap honour or to be lightly accepted in hard times. After Mr Rerrie, we look in vain throughout the parish for a suitable man. Mr Samuel Hart has perhaps done more public work for the parish than any other man, but he, and the few others that might be held fit for the honour, would most certainly refuse it. It seems that in this case, as a Custos is not necessary for us, it were better to let the honour be buried with one worthy of it, and not dishonour their memory, who have done honour to the position and the parish, by letting one bear it who is unfitted for the post.”
34. “Australian Dictionary of Biography,” http://adbonline.anu.edu.au.
37. The Camerton estate included a large part of the then profitable Somerset coal field.
38. www.stonyhurst.ac.uk/page/?pid=224.
40. Burke’s Peerage.