Question: Where was Francis Baring's son Alexander during the time of the negotiations?
About the article "Louisiana Purchase", section "Financing".

Candidate passages:
The American government used $3 million in gold as a down payment, and issued bonds for the balance to pay France for the purchase.
Earlier that year, Francis Baring and Company of London had become the U.S. government's official banking agent in London.
Because of this favored position, the US asked the Baring firm to handle the transaction.
Francis Baring's son Alexander was in Paris at the time and helped in the negotiations.
Another Baring advantage was a close relationship with Hope and Company of Amsterdam.
The two banking houses worked together to facilitate and underwrite the Purchase.
Because Napoleon wanted to receive his money as quickly as possible, the two firms received the American bonds and paid cash to France.
Close connections with American merchants inevitably resulted in links with the United States government.
Since the close of the American War of Independence, Baring had kept watch over the American government's finances in Europe.
However, his first significant transaction for its account was the sale in 1795 of $800,000 worth of stock and the remittance of the proceeds in support of American negotiations with the north African Barbary powers.
To secure the transaction Francis Baring admitted to acting with ‘zeal, perhaps imprudence, in going beyond the letters of my orders’ (New York Historical Society, Rufus King MSS, vol.
39, fol.
17), but the American ambassador in London commended his ‘liberal and skilful manner’ and undertook to ensure that the government would ‘entertain a proper sense of your Service in this Business’ (ibid., vol.
51, fol.
461).
Other business soon followed, including the sale of the government's shares in the Bank of the United States and the purchase of munitions from British manufactures for the government's account.
Considered to be an ‘English house of the first reputation and solidity’ (New York Historical Society, Rufus King MSS, vol.
55, fols.
378–9), Barings in 1803 was appointed London financial agent for the United States government, leaving Sir Francis Baring's influence in North American financial affairs unrivalled in London.
At about this time, when a short interval of peace existed after the treaty of Amiens, Baring led his house, alongside Hopes, into its largest and most prestigious transaction yet, financing the Louisiana Purchase.
The French government wanted to sell of the Territory of Louisiana, and the United States administration wanted to buy it; the purchase price was $15 million and Francis Baring was charged with finding it.
He sent his son Alexander to Paris to negotiate with French and American representatives, and the eventual result was that on behalf of the French government Barings and Hopes sold US government bonds worth $11.25 million.
The business was of enormous size; ‘my nerves are equal to the operation’, Francis Baring reassured Hopes, but he added that ‘we all tremble about the magnitude of the American account’ (Barings archives, Northbrook MSS, A4).
Later he confessed that ‘what I suffered can never be described and it completely overpowered my nerves for the first and I hope last time’ (ibid.
The leading American house in London also acted as London banker for the Bank of the United States.
Here again the close network of correspondents and friends which Baring so earnestly cultivated was vital.
Thomas Willing, William Bingham's father-in-law and Barings' client at Philadelphia since 1774, was the bank's president and so its use of Baring's firm in making London payments, undertaking exchange transactions, and providing credits was seemingly inevitable. 
Baring aimed to strengthen his links with Hopes even further, through his son joining their partnership, but Alexander Baring could not be persuaded to comply.
Baring's ultimate goal was to establish a house under his control based on both Barings and Hopes, which would straddle the North Sea, dominate government finance in Europe, and provide an enormously powerful base for its American connections.
Alexander's reluctance compelled him ‘to abandon the colossal plan of one foot in England, the other in Holland’ (Barings archives, DEP193.17.1, Baring to Shelburne, 9 Oct 1802).
It was ‘a sacrifice such as no head of a family ever made before’, he confided to Lansdowne, ‘but I must confess there is enough left for consolation’ (ibid.
In 1803 Baring began his withdrawal from business when he gave up his entitlement to a share of his firm's profits.
Much of his capital remained on loan; by the time of his death in 1810 he still provided £70,000 or about 17% of the firm's resources.
He stood down as partner in 1804, handing the reins to Charles Wall, the ‘principal manager’ according to Farrington, and his three eldest sons, Thomas, Alexander, and Henry.
In recognition of their assumption of leadership, in 1807 the nameplate of Francis Baring & Co. was taken down and replaced by that of Baring Brothers & Co. 
Throughout Baring's lifetime his good commercial intelligence, sound judgement, nimble-footedness, and instinct for speculative profit remained the hallmarks of his business style.
Thousands of speculations detailed in his firm's ledgers attest to this, but his burgeoning business and rising confidence were graphically illustrated in 1787 when Hope & Co. introduced him to speculation on a grand scale.
The two houses set about controlling the entire European cochineal market by secretly buying up all available stocks, one quarter for Barings and the rest for Hopes.
Correspondents from Saint Petersburg to Cadiz spent £450,000 but prices remained static and in 1788, with a huge loss anticipated, the partners of Barings agreed ‘to forgo any participation of the profits of the trade for the last year’ (Barings archives, DEP193.40).
The resumption of war in 1793 provided new challenges and opportunities.
The evacuation of Hopes to London between 1795 and 1803, when Amsterdam was occupied by France, and the availability of their expertise, contacts, and capital to Barings were of immense assistance.
The two houses embarked on bold transactions—invariably with a quarter for Barings and the rest for Hopes.
Their first adventure was entirely private and aimed to secure a substantial part of their capital from the dangers of European revolutions and wars.
In late 1795 Baring dispatched his 22-year-old son, Alexander, to Boston to negotiate and execute the purchase of more than 1 million acres (4000 km²) of land in Maine for £107,000.
The investment was introduced by the land's owner, Senator William Bingham, son-in-law of Barings' Philadelphia correspondent, Thomas Willing, and yet another friend of Lansdowne.
Francis Baring undertook the initial appraisal and commitment to the investment, and the negotiations were left to his son Alexander, who afterwards remained in North America as Barings' representative and who consolidated his position by marrying Bingham's eldest daughter, Ann Louisa.
The link was further strengthened through the marriage of Baring's third son, Henry, to Bingham's other daughter, Maria, in 1802.
Both marriages brought considerable wealth to the Baring family. 
Baron Howick of Glendale, of Howick in the County of Northumberland, is a title in the Peerage of the United Kingdom.
It was created in 1960 for Sir Evelyn Baring, the former Governor of Kenya.
A member of the famous Baring family, he was the third and youngest son of Evelyn Baring, 1st Earl of Cromer, and the great-grandson of Sir Francis Baring, 1st Baronet, the founder of Barings Bank.
Baring's uncle was Edward Baring, 1st Baron Revelstoke, the father of Maurice Baring, while other members of the family include Francis Baring, 1st Baron Northbrook, and Alexander Baring, 1st Baron Ashburton.
the title is held by the first Baron's son, the second Baron, who succeeded in 1973.
As a descendant of the first Earl of Cromer and Sir Francis Baring, 1st Baronet, he is in remainder to both the earldom of Cromer and its subsidiary titles and the Baring baronetcy of Larkbeer, titles held by his kinsmen the Earl of Cromer and the Baron Northbrook respectively.
The family seat is Howick Hall, near Howick, Northumberland.