William Neville Hart (27 December 1741 in St James's Palace, London – 23 October 1804, Inveraray Castle, Scotland) was a British banker, politician and diplomat.
[5] Aspinwall was a diplomat who had served in Constantinople and Algiers and at the time of his death in 1771 was Secretary to Earl Harcourt, Ambassador to France.
In the House of Commons, Hart made seven speeches, one notably on the proposed, Royal Marriages Act 1772; he spoke for the Court.
[8] Hart returned to England the following year and in October received a letter from the Duke of Portland to the effect that King George III had authorised him wear the Orders given to him.
[9] While on the Continent, Hart had kept extensive journals, but they were destroyed with other possessions in the 1802 fire at Roseneath Castle, the seat of the Duke of Argyll.
Hart's second wife, the daughter of Stanhope Aspinwall, apparently had died in 1783 and, according to The Gentleman's Magazine, at St Bemain de Colboe, Normandy.
;[11] her tombstone can be seen in the park around the castle of Filières with the epitaph : ici repose sous la garde de l'amitié Elisabeth Aspinwal mariée à Guillaume Nevil Hart membre du parlement d'Angleterre morte à 34 ans le 12 octobre 1783 également distinguée par son esprit et sa beauté des Français ont élevé ce monument à la mémoire de cette angloise ; a painting of Elisabeth Aspinwal can be seen in the castle of Filières On 23 October 1804, Hart died at Inveraray Castle, owned by the Duke of Argyll, Hart and Elizabeth, the daughter of Stanhope Aspinwall, had two sons and four daughters:[12]- A third son with Elisabeth Aspinwall, Francis, not identified above, was buried in Gommerville, Seine Maritime, France on 25 August 1779 aged about 3 years old.