Question: Where was Alexander during the negotiations?
About the article "Louisiana Purchase", section "Financing".

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Haakon IV responded to this request by gathering a fleet of over 120 leidang warships and setting out in July 1263 to defend the Western Isles.
Haakon IV stopped at the Isle of Arran where negotiations were started.
Knowing Haakon IV had to win a decisive victory before the winter, Alexander III stalled during the negotiations until the autumn storms.
In October 1263 several of King Haakons ships got stranded at Largs in stormy weather.
A rescue party was sent ashore to help salvage the ships, where the Scottish forces launched a surprise attack, and a minor skirmish followed.
The "battle" ended indecisively with a tactical draw.
The following morning King Haakon’s forces sailed back to Orkney for the winter, where he died in December.
King Haakon’s successor had problems at home, and lacked the proper funding to launch a new expedition. 
After his father was deported from Japan in 1826, he settled in Leyden, in the Netherlands, where he eventually married and had three sons and two daughters.
With the signing of the Japan-Netherlands Commercial Agreement, one of the unequal treaties ending Japan’s national isolation policy in 1858, von Siebold returned to Japan, bringing the young Alexander with him.
Living in Nagasaki, Alexander rapidly became fluent in the Japanese language.
When his father obtained a position as a foreign advisor to the Tokugawa shogunate, father and son travelled to Edo (modern-day Tokyo), where they resided with Prussian Consul.
However, in Edo was far from safe, with "sonno joi ronin" frequently attacking foreigners, and after the British consulate was attacked and burned, father and son returned to Nagasaki.
Soon afterwards, Alexander obtained a job as official interpreter for the Imperial Russian Navy in Nagasaki.
In 1862, Alexander was appointed official interpreter to the British consulate in Edo despite his youth (he was only 15 years old at the time), and despite the fact that English was not his native language, whereas his father, unable to secure a new appointed, departed back for the Netherlands, where he died four years later.
Much of the foreign affairs negotiations with the Tokugawa shogunate were still conducted in Dutch, and in cases where English was necessary (such as the negotiations pertaining to the Namamugi Incident, Alexander was assisted by Ernest Satow.
Alexander assisted British consul Edward St. John Neale during the Anglo-Satsuma War and was based on the flagship during the conflict.
He later accompanied the European task force during the Bombardment of Shimonoseki and the negotiations for opening the port of Hyogo to foreign settlement and trade in 1864.
When Tokugawa Akitake was sent to visit the 1867 World Fair in Paris, France, Alexander accompanied him.
With the Meiji Restoration, Tokugawa Akitake was ordered back to Japan, but Alexander stayed on in Europe and returned to Japan a year later in 1869 as an advisor to the Empire of Austria-Hungary.
He was subsequently ennobled with the title of baron by Franz Joseph I In August 1870, he resigned from the British Consulate.
However, the new Meiji government found use for his talents, and he was sent to London and subsequently to Frankfurt to make arrangements for Japanese students in those countries and to hire foreign advisors in all areas of expertise to come to Japan.
He also arranged for Japan’s participation in the Vienna World Expo of 1873.
He returned to Japan in November 1872, but was sent back to Europe again in February 1873 to late 1874 to render assistance to Sano Tsunetami.
In May 1875, he became official interpreter for the Ministry of Finance.
On the death of his mother in 1877, he returned to the Netherlands on six months leave, but was ordered to visit the Exposition Universelle and to assist in commercial negotiations in Berlin.
He returned to Japan in October 1881, but was sent back to Germany to assist Inoue Kaoru in Berlin in negotiations with the German government over treaty revisions in October 1881.
The negotiations were protracted and ultimately unsuccessful; he left Berlin in 1882, moved to Rome in 1884, returned to Japan in 1885, and moved to London in 1892 to assist Aoki Shūzō in the successful conclusion of the 1894 Anglo-Japanese Treaty of Commerce and Navigation.
In August 1910, he was awarded the Order of the Sacred Treasures (2nd class).
He died on the French Riviera in January 1911. 
According to some sources, Serbian king Peter I wanted Tatiana as a bride for his younger son, Prince Alexander.
In January 1914, the Serbian prime minister Nikola Pašić delivered a letter to Tsar Nicholas in which King Peter expressed a desire for his son to marry one of the Grand Duchesses.
Nicholas replied that he would allow his daughters to decide whom to marry, but he noticed that the Serbian prince Alexander often gazed upon Tatiana during a family dinner.
Marriage negotiations ended due to the outbreak of World War I. Tatiana exchanged letters with Alexander during World War I and Alexander was distraught when he learned of her death. 
When Philip returned to Pella, he fell in love with and married Cleopatra Eurydice, the niece of his general Attalus.
The marriage made Alexander's position as heir less secure, since any son of Cleopatra Eurydice would be a fully Macedonian heir, while Alexander was only half-Macedonian.
During the wedding banquet, a drunken Attalus publicly prayed to the gods that the union would produce a legitimate heir.
Alexander fled Macedon with his mother, dropping her off with her brother, King Alexander I of Epirus in Dodona, capital of the Molossians.
He continued to Illyria, where he sought refuge with the Illyrian King and was treated as a guest, despite having defeated them in battle a few years before.
However, it appears Philip never intended to disown his politically and militarily trained son.
Accordingly, Alexander returned to Macedon after six months due to the efforts of a family friend, Demaratus, who mediated between the two parties.
In the following year, the Persian satrap (governor) of Caria, Pixodarus, offered his eldest daughter to Alexander's half-brother, Philip Arrhidaeus.
Olympias and several of Alexander's friends suggested this showed Philip intended to make Arrhidaeus his heir.
Alexander reacted by sending an actor, Thessalus of Corinth, to tell Pixodarus that he should not offer his daughter's hand to an illegitimate son, but instead to Alexander.
When Philip heard of this, he stopped the negotiations and scolded Alexander for wishing to marry the daughter of a Carian, explaining that he wanted a better bride for him.
Philip exiled four of Alexander's friends, Harpalus, Nearchus, Ptolemy and Erigyius, and had the Corinthians bring Thessalus to him in chains. 
Chen had promised to release the hostages if Frank Hsieh, a renowned politician, personally came to negotiate the release of his wife and brother.
At 9:00 PM Taiwan time, Frank Hsieh arrived.
Negotiations started at 10:00 with success in ensuring the release of Mr. Alexander and his daughter Christine for treatment of their wounds sustained.
Further negotiations ended in the release of the family's foster son and Christine.
Mrs. Alexander was the last hostage released by Chen.
The release of Mrs. Alexander on 19 November 1997 brought an end to the crisis.
Police announced an end to the crisis at 4:00 PM.