William Leigh was born in Liverpool, and educated at Oxford and Eton.
At the time of the purchase he was living at Little Aston Hall in Staffordshire, where he had recently converted to the Roman Catholic faith.
This and the Gothic Revival style in architecture were fashionable, and formed the ideology for the new house.
He approached Augustus Pugin to draw up the plans.

Pugin drew up plans for the house but in 1846 he became ill and the project was allowed to drop.
Leigh meanwhile gave land in South Woodchester to a community of Roman Catholic Passionist fathers for a monastery and church.
He then turned to Charles Francis Hansom, whose brother designed the famous Hansom cab of Victorian London, to take over the architectural planning.

In 1857 Leigh dropped Hansom, and unexpectedly hired Benjamin Bucknall, a young man who was an aspiring architect and assistant to Hansom, but very inexperienced.
Bucknall set about studying Gothic Revival architecture – the result, Woodchester Mansion, is Bucknall's masterpiece.

Woodchester Mansion was constructed from 1858 to 1870, and finally in 1873, when William Leigh died, all work stopped.

It may be surmised that Leigh's surviving family were less keen on the design for shortly after Leigh's death they asked another architect, James Wilson of Bath, Somerset, to propose a new design.
This he did in his flamboyant Italianate style, but the cost of completing a new mansion was too great for any of them to afford. (
Indeed, it raises the question of how they ever thought they could both demolish and build a completely new building, but clearly it underlines that they did not share their father's passion for living in monastic conditions.)
Wilson had his own opinion of the site and wanted the family to build, if they were going to, in a new location in the valley.


Wilson wrote:
I consider the situation far from the best that might have been selected on the estate; it is low, damp, and has much shut-in on the south, west and north, so that a free circulation of air is impeded.
Its position is much too close to the high bank on the north, which will always keep the house damp, and if this bank were sloped off and formed into terraces (which must be allowed with a large outlay) still there would be a closeness and humidity, which would always prove to be detrimental.

In the meantime, Bucknall had moved to Algiers where he worked on domestic projects and villas.
The reason for his move is unknown, although poor health is one reason put forward, but without doubt he must have been bitterly disappointed that his grand vision and architectural statement had not been realised.
Indeed, in 1878 he wrote to Leigh's son:
there is nothing more sad to the sight than an unfinished work and it is even more forlorn than a ruin of a building which has served its purpose...
In 1894 Cardinal Vaughan paid a visit to the house, and the drawing room was updated, but from that day on the house stood often empty.
The next heir, Vincent Leigh, briefly lived in part of the house, and his sisters in the gatehouse.
William Leigh was born in Liverpool, and educated at Oxford and Eton. At the time of the purchase he was living at Little Aston Hall in Staffordshire, where he had recently converted to the Roman Catholic faith. This and the Gothic Revival style in architecture were fashionable, and formed the ideology for the new house. He approached Augustus Pugin to draw up the plans.
Pugin drew up plans for the house but in 1846 he became ill and the project was allowed to drop. Leigh meanwhile gave land in South Woodchester to a community of Roman Catholic Passionist fathers for a monastery and church. He then turned to Charles Francis Hansom, whose brother designed the famous Hansom cab of Victorian London, to take over the architectural planning.
In 1857 Leigh dropped Hansom, and unexpectedly hired Benjamin Bucknall, a young man who was an aspiring architect and assistant to Hansom, but very inexperienced. Bucknall set about studying Gothic Revival architecture – the result, Woodchester Mansion, is Bucknall's masterpiece.
Woodchester Mansion was constructed from 1858 to 1870, and finally in 1873, when William Leigh died, all work stopped.
It may be surmised that Leigh's surviving family were less keen on the design for shortly after Leigh's death they asked another architect, James Wilson of Bath, Somerset, to propose a new design. This he did in his flamboyant Italianate style, but the cost of completing a new mansion was too great for any of them to afford. (Indeed, it raises the question of how they ever thought they could both demolish and build a completely new building, but clearly it underlines that they did not share their father's passion for living in monastic conditions.) Wilson had his own opinion of the site and wanted the family to build, if they were going to, in a new location in the valley.

Wilson wrote:
I consider the situation far from the best that might have been selected on the estate; it is low, damp, and has much shut-in on the south, west and north, so that a free circulation of air is impeded. Its position is much too close to the high bank on the north, which will always keep the house damp, and if this bank were sloped off and formed into terraces (which must be allowed with a large outlay) still there would be a closeness and humidity, which would always prove to be detrimental.
In the meantime, Bucknall had moved to Algiers where he worked on domestic projects and villas. The reason for his move is unknown, although poor health is one reason put forward, but without doubt he must have been bitterly disappointed that his grand vision and architectural statement had not been realised. Indeed, in 1878 he wrote to Leigh's son:
there is nothing more sad to the sight than an unfinished work and it is even more forlorn than a ruin of a building which has served its purpose...
In 1894 Cardinal Vaughan paid a visit to the house, and the drawing room was updated, but from that day on the house stood often empty. The next heir, Vincent Leigh, briefly lived in part of the house, and his sisters in the gatehouse.
Woodchester Mansion