he was evidently advanced in years, so that the date (1380) given by Bale for his ‘floruit’ is too late. That he was ‘philosophiæ magister Cantabrigiensis,’ as Tanner asserts (Bibl. Brit. p. 400), on the authority of Bale and Pits, is a mistake not to be found in either of those writers, but due apparently to inadvertence on Tanner's own part.
Heytesbury's works are all printed under the name of Hentisberus or Tisberius (cf. Wood, Survey of the Antiquities of the City of Oxford, ed. A. Clark, vol. i. 1889, pp. 345 f.), and exist in the following editions: 1. ‘Sophismata magistri Guliermi Entisberi,’ printed at Pavia (not Paris, as Tanner states) in 1481, folio. 2. A series of treatises, ‘De sensu composito et diviso,’ ‘de insolubilibus,’ ‘de scire et dubitare,’ ‘de relativis,’ ‘de incipit et desinit,’ ‘de maximo et minimo,’ and ‘de motu locali,’ followed by the ‘Sophismata xxxii’ (as in the edition of 1481) and tracts ‘de veritate et falsitate propositionis’ and ‘de probationibus conclusionum,’ edited by Johannes Maria Mapellus, with commentaries by Gaetanus de Thienis and others (Venice, 1494, fol.) An edition, printed at Venice in 1483, and described by Hain (Repert. Bibliogr. No. 8441) as containing works by Hentisberi, contains, in fact, only the commentaries of Gaetanus on the treatises included in the edition of 1494, with the exception of the ‘De sensu composito et diviso,’ of the last two ‘Sophismata’ (which are given in a different order), and of the two tracts which conclude the 1494 volume. C. von Prantl names also an edition of the ‘De sensu composito et diviso’ printed at Bologna in 1504, 4to, with the commentary of B. Victorius (Geschichte der Logik im Abendlande, iv. 89 n. 347, Leipzig, 1870). 3. ‘Consequentie subtiles Tisberii,’ printed with the ‘Consequentie Strodi’ (signature o, 8) at Venice in 1517 (not, as Tanner, 1511) in folio.
Heytesbury's position as a logician, chiefly with respect to the doctrine of the ‘Obligatoria’ and ‘Insolubilia,’ is discussed by Prantl, 1. c. pp. 89–93.
[Authorities cited above.]
HEYTESBURY, Baron, WILLIAM A'COURT (1779–1860), eldest son of Sir William Pierce Ashe A'Court, M.P. for Aylesbury, by his second wife, Letitia, daughter of Henry Wyndham of Salisbury, was born 11 July 1779, and educated at Eton. He entered the diplomatic service, and in 1801 he was appointed secretary of legation at Naples by Lord Hawkesbury (afterwards Lord Liverpool). In 1807 he became secretary to the special mission at Vienna. In 1812 he was made first commissioner for affairs at Malta, and on 5 Jan. 1813 was gazetted envoy extraordinary to the Barbary States. In 1814 he held the same appointment at Naples, and his conduct during the revolution was highly commended by Lord Castlereagh (Colchester, Diary, iii. 160). In 1822 he became envoy extraordinary to Spain, and in 1824 ambassador to Portugal. In 1828, during the Russo-Turkish war of that date, he was transferred as ambassador to Russia, where he remained till August 1832. His position was difficult; he had to journey to the seat of hostilities, and was reprimanded for an imprudent conversation with the czar, whom at that time he greatly admired. Lord Ellenborough records (Political Diary, i. 247) that he took the censure well. He succeeded his father as second baronet in 1817, and in the same year he was created a privy councillor, and in 1819 he became G.C.B. In 1828 A'Court was created Baron Heytesbury of Heytesbury, Wiltshire. In 1835 he was nominated by Sir Robert Peel's ministry governor-general of India, but the ministry resigned very soon afterwards, and Heytesbury did not assume office. From 26 July 1844 to 1846 he was viceroy of Ireland in Sir Robert Peel's administration, and was energetic in raising subscriptions in behalf of sufferers from the famine. He was governor of the Isle of Wight till 1857. Heytesbury died at Heytesbury on 31 May 1860. He married, in 1808, Maria Rebecca, second daughter of the Hon. William Henry Bouverie, son of the Earl of Radnor, and left by her a son, W. H. Ashe A'Court, who succeeded to the barony, and a daughter, Cecilia Maria, who married the Hon. Robert Daly.
[Authorities cited; Times, 1 June 1860; Burke's Peerage; Foster's Peerage; Haydn's Book of Dignities; Gent. Mag. 1860, ii. 90.]
HEYTHER, WILLIAM (d. 1627), musician. [See Heather.]
HEYWOOD, Sir BENJAMIN (1793–1865), banker, son of Nathaniel Heywood, banker, was born at Manchester on 12 Dec. 1793, and educated at the Glasgow University. On coming of age he was admitted a partner in his father's bank, eventually becoming the head of the firm. He was greatly interested in the welfare, and especially the education, of the working classes. The Manchester Mechanics' Institution was founded chiefly by him, and he was its president from the commencement in 1825 until 1840. He delivered a series of admirable addresses at that institution. These were collected and published in 1843, two of them having been previously
