[1] The house then passed back to Sir Uvedale Corbett in around 1650 and a detailed map of the Leighton Estates in 1663, by William Fowler, exists in the Powis Castle Archives at the National Library of Wales.

Sir Richard, Uvedale Corbetts' son, took advantage of the wooded eastern slopes of the park in the early eighteenth century, felling large areas of oak for sale to the Admiralty.

In 1847, he gave it as a wedding present to his nephew John Naylor (1813–1889), who then proceeded to rebuild the house and estate at a reputed cost of £275,000, plus an additional £200,000 on the farm technology.

Thomas Leyland appears to have had a great regard for his sister's two sons, Richard and Christopher Bullin and her daughter Dorothy.

[6] Richard Christopher Naylor purchased Hooton Hall in 1849, which he extensively re-built and also established an important horse racing stud.

Naylor inherited a love of the sea and sailing from his father (a member of the Royal Yacht Squadron and owner of the schooner Sabrina).

In 1889 Christopher John Naylor inherited the Leighton and Brynllywarch estates from his father, which he made over to his brothers and their heirs in 1891, on the death of his uncle Thomas Leyland.

At Leighton, the North West Park was broken up into large and small parcels of land and with their associated dwellings auctioned off in separate lots to private buyers.

[13] The house is built of brick, but the main elevations are faced in coursed, rock-faced stone ashlar dressings from Cefn near Minera.

These were probably made by John Marriott Blashfield of Stamford, Lincolnshire, who supplied terracotta for the Naylors at Garthmyl Hall, Berriew.

The great hall was designed to display Naylor's collection of paintings and sculpture, which included works by Turner, Landseer, Delaroche and Ansdell.

The gardens, now largely derelict, are of many kinds, from woodland to formal, arranged as a number of set-pieces with pools and stone sculptures linked by broad paths.

[21] In 1874 Kemp laid out a decorative water cascade fed from a series of lakes, which sequenced down from the Moel y Mab on Long Mountain.

[22] He then developed the estate's Park Wood, making use—like many Victorians of the time—of exotic species including monkey puzzle trees.

[24] Kemp in his garden layout had placed two disparate Pacific coast North American species of conifers in close proximity to each other: Monterey Cypress, Cupressus macrocarpa (syn.

Naylor, sold the estate in 1931, when the Leighton Farm was bought by Montgomeryshire County Council and subsequently split up into small industrial units and smallholdings.

This has paved the way for a comprehensive restoration programme of the Grade II* listed buildings which is currently proceeding, and has been grant aided by Cadw.

James Potter's long term proposal is to create an equine centre at Leighton, building on his current National Hunt interests, and presents possibilities for future regeneration in the Welshpool area.

The Model Farms of the Georgian period were designed by architects, in contrast to local vernacular layouts, and were normally in close proximity to major country houses.

[28] A change occurred in the later 1840s and particularly after the passing of the repeal of the Corn Laws in 1846 which ushered in the period of Victorian High Farming, which lasted until about 1870.

Dean advocated a rectangular layout and the use of tramways for moving feedstuffs for cattle, and recommended that the yards for the animals be open towards the south to let the sunlight in and give the greatest protection from the wind.

[31] Elsewhere in Wales the change came around 1850 when the Duke of Beaufort's Farm at Wolvesnewton in Monmouthshire was laid out in a cruciform shape and used a railway track to run through the haybarns[32] to move the feedstuffs.

Poolton and Gortheur stand at the SW corner of the complex of buildings comprising Leighton Farm and are attached on N and E sides to a former office and stock houses.

Originally the ground floor was as a 3-bay shed for parking traction and ploughing engines which could also be used to power ancillary machinery at the Leighton Home Farm, while the basement incorporated a smithy, a maintenance shop and a storage area.

The Model Farm is part of a much larger group of industrialised Estate building associated with Leighton Hall these include a smaller model farm at Glanhafren on the Welshpool side of the River Severn, the Cilcewydd Corn mill, a Gas Works with Retort House, Brickyard and Brickworks, a Poultry House, funicular railway, and a massive manure slurry tank on the Moel y Mab hill, which was used to distribute slurry through a system of copper pipes for fertilising the fields.

[44] In the valley of the Severn the river was diverted to drive a water-ram which pumped water to a huge stone faced tank on Moel-y-Mab, a spur of the Long Mountain.

Often much older timber framed buildings were refaced in brick and given a Cottage Ornée appearance, often by adding decorative bargeboards to the dormer windows.

His partner, David Walker in contrast, favoured whitish or yellowish brick with ornamental gables, as on a double villa type house near the Mill at Cilcewydd, which can be attributed to him.

The house is between the railway line and the river Severn to the S of Welshpool, approached via a track which leaves the A490 Montgomery Road immediately W of Cilcewydd.

The house was extensively rebuilt and a complex of farm buildings were added for John Naylor by the estate architects Poundley and Walker.