ISLEWORTH, a parish in the hundred of ISLEWORTH, county of MIDDLESEX, 9 miles (W. S. W.) from London, containing, with that partof the town of Hounslow which is within the parish, 5269 inhabitants. This place was principally distinguished for a splendid monastery, founded originally at Twickenham, in 1414, by Henry V., and dedicated to Our Holy Saviour, the Blessed Virgin, and St. Bridget, for sixty sisters, thirteen priests, four deacons, and eight lay brethren of the order of St. Augustine, as reformed by St. Bridget: in 1432, the community removed to Isleworth, where was erected a spacious edifice called the monastery of Sion, the revenue of which, at the dissolution, was £ 1944.11.8. The site was granted, in the 1st of Edward VI., to Edward, Duke of Somerset, Lord Protector, who erected the superb mansion of Sion house, which, in the seventh year of the same reign, was granted to John Dudley, Duke of Northumberland. In the reign of Mary, the convent was re-founded for an abbess and nuns, but was finally suppressed in that of Elizabeth, and continued vested in the crown till the reign of James I., when it was given to Henry Percy, the ninth Earl of Northumberland. The Dukes of York and Gloucester, sons of Charles I., and their sister, the Princess Elizabeth, were placed here by the parliament, under the care of the countess, in 1646. This mansion, which about the middle of the seventeenth century underwent several alterations and repairs, and received considerable addi-. tions, under the superintendence of Inigo Jones, is a spacious quadrangular and embattled structure, with towers at the angles. The entrance from the western road is through a handsome gateway, on each side of which is an open colonnade, into a spacious lawn, ornamented with clusters of stately trees, and shelving to the margin of the Thames, which pursues its winding course along the border of the park and grounds. A noble flight of steps leads to the great hall, which is decorated with colossal statues and a fine bronzed cast of the dying gladiator: the hall opens into a handsome vestibule, the floor of which is of scagliola marble, and the walls richly ornamented in relievo, and embellished with gilt trophies; twelve columns of verd antique, supporting gilt statues, and sixteen pilasters of the same rare and costly marble, impart an air of sumptuous magnificence to this part of the building, from which there is an entrance into the dining-room: this apartment is characterised by a chaste simplicity of style, and ornamented with marble statuary and paintings in chiaro-oscuro j at each end is a semicircular recess, separated by columns of graceful proportion, and the ceiling is elegantly worked in stucco, and enriched with gilding. The drawing-room is splendidly furnished; the walls are hung with rich tri-coloured damask; the mirrors are nine feet high, and nearly six feet hi breadth, and the tables are of costly mosaic, found in the baths of Titus, and purchased at Rome; the ceiling, which is coved, is divided into small compartments richly gilt, and displaying designs from the antique, executed by Italian artists. The gallery, which contains the library and museum, is one hundred and thirty-three feet in length, and is finished after the antique style, hi stucco, of the most light and elegant design: the ceiling is embellished with paintings, and ornamented with various devices, harmonising with the general character of the whole; and immediately below it are paintings in medallions exhibiting a series of portraits of the Earls of Northumberland, of the Percy and Seymour families. At the west end are folding-doors opening into the gardens and pleasure grounds, which are laid out with a degree of taste and skill that has rendered them in every respect worthy of the splendid mansion, to which they are an appendage. The village is pleasantly situated on the northern bank of the Thames, and consists of one principal street, well lighted with gas; the houses are in general respectable and well built, and the inhabitants are amply supplied with water -. the environs are profusely rich in beautiful scenery, on both banks of the river, being adorned with elegant mansions and villas, with their appendant pleasure grounds and shrubberies. A considerable portion of land in the neighbourhood is cultivated by market-gardeners, who supply the London markets. Among the various fruits for the perfection of which the soil is peculiarly favourable, are raspberries and strawberries, of which great quantities are carried to Covent Garden market; of the latter, a new species, called the Scarlet Emperor, has within the last year been grown here, which for beauty and flavour is unequalled. Calico-printing was formerly carried on here to a considerable extent, but within the last three years it has been discontinued: there are two extensive corn-mills, one of which formerly belonged to the monastery; and there is also a large brewery. A branch of the Paddington canal joins the Thames at the eastern extremity of the parish, near Brentford. A pleasure fair is held here on the first Monday in July, and at Hounslow are two annual fairs. Isleworth is within the jurisdiction of the county magistrates, and within that of a court of requests held at Brentford during the summer half-year, and at Uxbridge during whiter, for the recovery of debts under 40s. The Duke of Northumberland holds courts leet and baron in April and October, and the Dean and Canons of Windsor hold an annual court leet. The living is a vicarage, in the archdeaconry of Middlesex, and diocese of London, rated in the king's books at £ 18, and in the patronage of the Dean and Canons of Windsor. The church, dedicated to All Saints, occupies an elevated situation near the margin of the river, and forms a conspicuous and interesting feature in the landscape; the venerable tower, overspread with ivy, and surmoxinted by a belfry-steeple, in the early style of English architecture, has a picturesque appearance: the body of the church was taken down and rebuilt of brick in 1704, and repaired and beautified in 1829. The interior, which consists of a nave -with north and south aisles and a chancel, contains many handsome monuments, among which are, one of white marble, with a finely-sculptured bust, to the memory of Mrs. Ann Tolson, who founded almshouses here; one to Sir Orlando Gee, registrar of the court of Admiralty after the Restoration; and one to George Keate.Esq., F.R.S. and F.S.A., author of an account of Captain Wilson's Shipwreck among the Pelew Islands. A small brass plate, with the effigy of a nun, belonging to the original convent, has been inlaid in the door of the Duke of Northumberland's pew. There are places of worship for the Society of Friends, Independents, and Wesleyan. Methodists, and a Roman Catholic chapel. The charity school, or Blue school, since united with the National school, was first established in 1715, and is endowed with funds which had accumulated from savings invested in the three per cent, consols, arising from a bequest of lands at Langley-Morris, in the county of Buckingham, by Lady Elizabeth Hill, in 1680; and from houses and tenements left, in 1672, by Mrs. Ann Oliver, and exchanged for lands at Orpington, in the county of Kent, by William Chelcott, Esq., who, hi 1658, bequeathed a rent-charge of £20 on lands at Nettlebed, in the county of Oxford, for apprenticing boys, and other benefactions, producing in the aggregate more than £280 per annum: one hundred boys and sixty girls are instructed hi this school, of which number forty of each sex are clothed, the boys being apprenticed and the girls placed out as servants. An infant school, established in 1829, in which eighty children are instructed; and a Sunday school, which has also a small endowment, are principally supported by subscription. Almshouses were founded, in 1671, by Sir Thomas Ingram, Knt., for six aged widows, to each of whom he assigned a pension of £4 per annum, secured upon his house at Isleworth; and for the further endowment of which, his wife, Frances, gave, in lieu, a sum of money for the purchase of land; to which several benefactions having been added, the inmates now receive £10 per annum, with other allowances. There are almshouses for six aged unmarried men and six aged widows, or maidens, founded and endowed with the sum of £5000, given by Mrs. Ann Tolson, in consequence of having unexpectedly succeeded to property of the value ot £40,000, after having been obliged to keep a boardingschool for her support: she died in 1750, having married a third husband, who survived her, and contested the validity of the donation, which, by a decree of the court of Chancery, he was at length compelled to pay, with interest, amounting in 1756 to £6125.2.9. Mrs. Gosling subsequently left £210 three per cents, to these almshouses, the whole income belonging to which is £171. 6. per annum, the inmates receiving each an allowance of £9. 4. per annum, with clothing, coal, and other assistance. An almshouse for six aged women was built, in 1764, by Mrs. Mary Bell, who endowed it with lands producing an income of more than £ 60 per ann., which is distributed among the inmates, after defraying the expenses of repairs, in money, bread, clothes, and firing. There are numerous charitable bequests for distribution among the poor. Anthony Collins, a deistical writer, and the correspondent and friend of Locke, was born here in 1676.