Nathaniel Pigott, (1725–1804), astronomer, was born at his grandfather's house in Whitton, Middlesex, probably the only son of Ralph Pigott (d. 1731), a lawyer of the Middle Temple, and his wife, Alethea, the daughter of William, ninth Viscount Fairfax. His grandfather Nathaniel Pigott (1661–1737), renowned as a barrister and a friend of Pope, legally assisted William Fairfax, eighth viscount, of Gilling, Yorkshire, and acted as conveyancer to most of the Yorkshire Catholic families. The Pigotts were staunch Catholics and maintained a Jesuit chaplain in their private chapel at Whitton. Ralph was the only son not educated at Douai; two of his brothers became Benedictines, while another, Nathaniel, was in business as a druggist at Brownlow Street, Holborn, London. After Ralph's unexpected death, Alethea and her children moved to Ormonde Street, Holborn, and before 1752 she left England and settled in Brussels, near the English Benedictine convent where her daughters Rebecca and Catherine professed as nuns.

Nathaniel Pigott attended school at St Gregory's Benedictine College, Douai, about 1737, and later joined his mother. He married in Brussels, on 29 September 1749, Anna Mathurine De Bériot (1727–1792) of Louvain. Of at least four children born, two sons survived infancy: Edward Pigott (1753–1825) and Charles Gregory Pigott (d. 1845), both educated in France. The Pigotts led a vagrant life in various parts of Britain and on the continent, where, like many other English Catholics, they found life more congenial. For some years they resided at Caen, in Normandy, and counted among their friends several of the Paris academicians.

It is not known how Pigott became interested in astronomy, but he had sufficient money to acquire a number of fine instruments from the best London makers, and he gained a reputation for his observing and computational ability. He was in regular communication with J. H. Magelhaens, the so-called Portuguese agent, who negotiated the procurement or repair of scientific instruments for those who were unable to deal in person with the London makers.

Our knowledge of Pigott's movements comes from the meteorological and astronomical journals which he kept with the assistance of his wife and Edward. He was still at Whitton in 1760, but at Louvain in 1761 and at Caen from 1764 to 1768, where he built an observatory at his house near L'Abbatiale. In 1771 he was in London and at Gilling, where Edward's French style of dress and manners caused some comment, and in 1772 he was in Brussels, where he took delivery of a new 2½ foot reflecting telescope by Heath and Wing, ordered previously in London. In April that year both he and Edward were presented at court to Prince Charles of Lorraine and to his prime minister, Prince Staremberg, before returning to England.

Pigott chanced to pass through Brussels on his way to Spa at a time when a cartographic survey of the Austrian Netherlands was being proposed. His assistance was sought, probably at the recommendation of John Turberville Needham FRS, principal of the Imperial Academy in Brussels, to determine astronomically, by timing eclipses of Jupiter's satellites, the geographical positions of the principal towns. Pigott immediately cancelled his visit to Spa, sent to England for his instruments, and devoted five months to this task. Equipped with a clock with a gridiron pendulum by Le Paute, a quadrant by Bird, which Pigott borrowed from the Royal Society, a 6 foot Dollond achromatic telescope, two barometers by Ramsden and one by Wing, Needham and the Pigotts proceeded slowly via Namur, Luxembourg, Antwerp, Ostend, Tournai, Brussels, and Louvain, where they arrived in the summer of 1773. Pigott took the meridian heights of many stars. He also undertook an unusual experiment to see what effect the sound of the great bell of Ste Goedule in Brussels had on the barometer, later described by Sir Henry Englefield, who had joined them in Brussels. Pigott was elected a foreign member of the Imperial Academy in 1773 and a correspondent of the Paris Academy of Sciences in 1776. He freely communicated his observations, which included transits of Venus and Mercury, and sightings of comets, some of which were published by learned societies and others incorporated into anonymous records. He was among the first to study double stars and those which had a proper movement.

The Pigotts arrived at Gilling in 1774 in order to press claims to the Gilling estate, but, failing to resolve the affair by means of a private act of parliament, in the summer of 1777 they lodged with another relative, Lady Widdrington, at Wickhill in Gloucestershire, where Pigott determined the longitude. He then moved to Frampton House, Glamorgan, on his own estate, where he erected an observatory with a transit by Sisson, the 6 foot Dollond achromatic, and several smaller telescopes. During this time Edward occupied himself with a survey of the Severn estuary, finding it to be far less broad than most maps indicated. In 1781 the Pigotts returned to York in the hope of succeeding to what was left of the Gilling estate. They leased a house just outside Bootham Bar, close to the minster, and built a substantial two-storey stone observatory in the garden to house the instruments from Frampton. Nathaniel observed there until 1785, when they went again to Louvain. It was a fruitful time too for Edward, who became fast friends with his distant cousin John Goodricke (1764-1786), said to have become a deaf mute in his early youth. For his discovery of periodicity and variation of certain stars, Goodricke was elected to the Royal Society at the age of twenty one. Edward shared his passion, and on one remarkable occasion, the night of the 10th September 1784, first Edward, then a few hours later John Goodricke, each made new discoveries of variable stars. Their brief yet historical partnership was ended by John Goodricke`s premature death. During the 1780s, the result of a lengthy family quarrel, Edward was cut out of his inheritance, when Ann Fairfax died in 1793, Charles Gregory Pigott inherited Gilling Castle. He took the name of Fairfax and married in 1794 a protestant, Mary, the sister of Sir Henry Goodricke of Ribston, and died in 1845. Nathaniel Pigott died at his home in York on 4 June 1804 and was buried the following day in Gilling churchyard. In his latter years he was being looked after by Lavinia Goodricke, who as sole executrix declared his personal estate at the time of his death to be under £600.

Edward Pigott continued a somewhat vagrant life but, after brief pauses in Louvain, York, and London, he settled about 1796 at Bath, where he set up the instruments from York in an observatory at 15 Belmont, the house he occupied from about 1808. He corresponded with the botanists John Stackhouse and Dawson Turner, with whom he shared an interest in seaweeds. When travelling again to France he was detained in Fontainebleau about 1803 during the Anglo-French hostilities. In May 1806 he wrote to old friends at the Academy of Sciences, begging their help in securing permission to return to England, where his astronomical apparatus and botanical collections were being neglected; in July the emperor acceded to their request and his passport was returned. He continued to make observations from Bath for some years, and his letters to Sir William Herschel report sightings of comets in 1799, 1807, and 1811. In his letter of 10 August 1821, addressed to John Herschel, he mentions his own poor health and sends greetings to the elderly Sir William, who had befriended his father. He died unmarried at his home on 27 June 1825. His body was transported to Bridlington, Yorkshire, in accordance with his wishes, and was buried close to the grave of his mother on 11 July.

Anita McConnell

Sources  

J. C. H. Aveling, Catholic recusancy in the city of York, 1558–1791, Catholic RS, monograph ser., 2 (1970) · A. Brech and A. McConnell, ‘The Pigott family: eighteenth century connections with church, science and law’, Recusant History, 25 (2000), 449–60 · J. Scott, ‘York astronomers and instrument makers’, Yorkshire Gazette (24–31 Jan 1925) · papers of Nathaniel and Edward Pigott, City of York RO, Acc 227/8–13, 24 · RAS, Pigott MSS · A. Quételet, Histoire des sciences mathématiques et physiques chez les Belges (1864), 291–5 · J. Lavalleye, L'Académie Royale des Sciences, des Lettres, et des Beaux-Arts de Belgique, 1772–1972 (1973) · M. Hoskin, ‘Goodricke, Pigott and the quest for variable stars’, Journal for the History of Astronomy, 10 (1979), 23–41 · S. Melmore, ‘Nathaniel Pigott's observatory at York, 1781–1793’, Annals of Science, 9 (1953), 281–6 · Archives de l'Académie des sciences, Paris, Pigott MSS · minutes, vol. 95, 10 Jan–20 Dec 1776, Académie Royale des Sciences, Paris, fol. 187r · minutes, vol. 3, 1804–7, Académie des Sciences, Paris, 354, 389 · J. Bernoulli, Nouvelles littéraires de divers pays, 5 (1779), 67; 6 (1779), 43–5 · parish register (burial), Gilling, 5 June 1804 · parish register (burial), Bridlington, 11 July 1825 [Edward Pigott] · A. Brech and A. McConnell, ‘Nathaniel and Edward Pigott, itinerant astronomers’, Notes and Records of the Royal Society, 53/3 (1999), 309–18