What defines Baroque portraiture from the late 17th and 18th centuries?

Baroque portraiture of this era features dramatic contrast between light and shadow, rich fabrics, and formal compositions designed to communicate the social standing and authority of the subject.

What traditional materials were used in 18th-century oil portraits?

Artists painted using oil pigments mixed with natural binders on hand-woven canvas, which were traditionally mounted into carved timber frames finished with plaster gesso and gold leaf gilding.

How can an authentic 18th-century portrait be identified?

Authentic period oil paintings display natural age craquelure across the paint layer, hand-carved joinery on the wooden stretchers, and dark oxidisation on the timber reverse.

How can an antique portrait painting be styled in a modern interior?

A period portrait placed above a streamlined side table or integrated into a gallery wall adds texture, historical depth, and visual contrast against contemporary interior finishes.

How should an antique oil painting and gilt frame be maintained?

Display the artwork away from direct sunlight, dampness, and heat sources, dusting the frame lightly with a soft brush while avoiding water or chemical cleaning solvents on the varnish.

for sale €11,466 $12,446

£9,800

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18th Century Oil Portrait King William III

Name: 18th Century Oil Portrait King William III
Brand: Antique
SKU: SA1228520
Price: 9800 GBP
Availability: InStock

18th century

For Sale by Cheshire Antiques Consultant Ltd

Description

After Sir Godfrey Kneller King William III Royal Portrait Early 18th Century

A distinguished early 18th century British oil portrait of King William III, 1650-1702, painted after the established royal portraiture of Sir Godfrey Kneller, 1646-1723, Principal Painter to the Crown.

William III is depicted bust length within an oval composition wearing magnificent royal state robes, an ermine lined mantle, elaborate lace cravat and the ceremonial Collar of the Order of the Garter with the suspended Great George.

The Portrait

William's pale features are framed by a long dark allonge periwig characteristic of the late Stuart court. The combination of patterned fabric, ermine, lace and Garter insignia creates an imposing image of monarchy and chivalric authority.

Catalogue Details

Artist: Unidentified British School painter

Attribution: After Sir Godfrey Kneller

Sitter: King William III

Date: Early 18th century

Period: Late Stuart or early Georgian

Origin: Great Britain

Medium: Oil on canvas

Format: Oval

Signature: None identified

Frame: Associated decorative gilt frame

The painting is conservatively catalogued as After Sir Godfrey Kneller, recognising its close relationship with Kneller's established portraits of William III without claiming autograph or studio authorship.

Recorded Comparison

A closely related portrait was offered by Bonhams Edinburgh on 16 October 2014, Lot 94, as After Sir Godfrey Kneller, Portrait of King William III, bust length, oil on canvas, oval, measuring 71.4 x 63.2 cm.

The composition and dimensions are notably close to the present portrait, indicating separate versions derived from the same or a closely related Kneller prototype.

Provenance

Private collection, Scotland.

Lindsay Burns and Company, Perth, Scotland, 2026.

Acquired and curated by Cheshire Antiques Consultant LTD, 2026.

Professionally examined and conserved by Vanessa Andrew M.A., Fine Art Conservator, Cheshire, June-July 2026.

Exhibition History

Privately loaned and exhibited at The Famous Lord Hill Museum, July 2026.

Conservation

Professionally examined and conserved in 2026. Examination confirmed historic lining, extensive craquelure and areas of previous overpainting. UV fluorescence examination formed part of the assessment.

Treatment included surface cleaning, selective varnish removal, filling of localised losses, sympathetic retouching, conservation varnishing and securing the canvas to its strainer.

An older discoloured varnish layer was retained following professional assessment.

A professional Condition Report, Treatment Report and photographic conservation record accompany the painting.

Dimensions

Painting: approximately 73.5 x 63 cm or 28.9 x 24.8 inches.

Overall framed: approximately 104 x 86 x 6 cm or 40.9 x 33.9 x 2.3 inches.

Condition

Presented in professionally conserved historic condition consistent with its considerable age. The historically lined canvas displays extensive craquelure, including areas of raised cracking, with previous overpainting particularly within the background.

The associated gilt frame has historic alterations, repairs and restoration and is not represented as demonstrably original.

Please examine all photographs carefully.

Certificate of Sale and Dealer Attribution

Supplied with a Certificate of Sale and Dealer Attribution issued by Cheshire Antiques Consultant LTD, recording the artwork's catalogue details, attribution, provenance as stated and details of the sale.

Worldwide Shipping

Worldwide delivery available. Professionally packaged and dispatched fully insured. Please contact us for a destination specific quotation.

Cheshire Antiques Consultant LTD

Specialising in carefully curated British and European fine art, antiques and historic works of art.

Date of Manufacture

Cheshire Antiques Consultant Ltd has dated this 18th Century Oil Portrait to the 18th Century.

Independent Date Check ID 09599640

Dealer's Item Date18th Century

Sellingantiques Date18th Century

Sellingantiques agingItem 285-335 years old

Test ResultsPassed dating check

Why Sellingantiques dated this piece to THE 18TH CENTURY:

Network of fine age craquelure across the paint: natural drying over centuries.

Hand-sawn pine strainer with lap joints: early framing before modern keyed corners.

Dark oxidisation and old iron tacks on the strainer: long-term exposure.

Periwig, lace cravat and Garter collar: royal fashion under William III.

This is an independent date report produced by Sellingantiques using its own proprietary system. The process uses the photographs shown on this page. The system is never told the date the dealer has declared. This report shows that the two dates corroborate.

Physical Dimensions

Height

104cm (40.94")

Width

86cm (33.86")

Depth

6cm (2.36")

Reference Numbers

Sellingantiques Reference

SA1228520

Dealers Internal Reference

CAK-SK-0506

Dealers Notes

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Cheshire Antiques Consultant LTD®

Registered in England & Wales

Company No. 15666518

VAT No. GB 466128775

Description

After Sir Godfrey Kneller King William III Royal Portrait Early 18th Century

A distinguished early 18th century British oil portrait of King William III, 1650-1702, painted after the established royal portraiture of Sir Godfrey Kneller, 1646-1723, Principal Painter to the Crown.

fig 1. An 18th-century oil painting depicting King William III in a curled wig and ermine cloak, set within an oval aperture inside an ornate rectangular gold carved frame. — fig 1. 18th Century Oil Portrait King William III

William III is depicted bust length within an oval composition wearing magnificent royal state robes, an ermine lined mantle, elaborate lace cravat and the ceremonial Collar of the Order of the Garter with the suspended Great George.

fig 2. An 18th-century oil painting depicting King William III in a curled wig and ermine cloak, set within an oval aperture inside an ornate rectangular gold carved frame. — fig 2. 18th Century Oil Portrait King William III

The Portrait

“

William's pale features are framed by a long dark allonge periwig characteristic of the late Stuart court.

Cheshire Antiques Consultant Ltd

The combination of patterned fabric, ermine, lace and Garter insignia creates an imposing image of monarchy and chivalric authority.

fig 3. An 18th-century oil painting depicting King William III in a curled wig and ermine cloak, set within an oval aperture inside an ornate rectangular gold carved frame. — fig 3. 18th Century Oil Portrait King William III

Catalogue Details

Artist: Unidentified British School painter

Attribution: After Sir Godfrey Kneller

Sitter: King William III

Date: Early 18th century

Period: Late Stuart or early Georgian

Origin: Great Britain

fig 4. An 18th-century oil painting depicting King William III in a curled wig and ermine cloak, set within an oval aperture inside an ornate rectangular gold carved frame. — fig 4. 18th Century Oil Portrait King William III

Medium: Oil on canvas

Format: Oval

Signature: None identified

Frame: Associated decorative gilt frame

The painting is conservatively catalogued as After Sir Godfrey Kneller, recognising its close relationship with Kneller's established portraits of William III without claiming autograph or studio authorship.

fig 5. An 18th-century oil painting depicting King William III in a curled wig and ermine cloak, set within an oval aperture inside an ornate rectangular gold carved frame. — fig 5. 18th Century Oil Portrait King William III

Recorded Comparison

A closely related portrait was offered by Bonhams Edinburgh on 16 October 2014, Lot 94, as After Sir Godfrey Kneller, Portrait of King William III, bust length, oil on canvas, oval, measuring 71.4 x 63.2 cm.

fig 6. An 18th-century oil painting depicting King William III in a curled wig and ermine cloak, set within an oval aperture inside an ornate rectangular gold carved frame. — fig 6. 18th Century Oil Portrait King William III

The composition and dimensions are notably close to the present portrait, indicating separate versions derived from the same or a closely related Kneller prototype.

Provenance

Private collection, Scotland.

fig 7. An 18th-century oil painting depicting King William III in a curled wig and ermine cloak, set within an oval aperture inside an ornate rectangular gold carved frame. — fig 7. 18th Century Oil Portrait King William III

Lindsay Burns and Company, Perth, Scotland, 2026.

Acquired and curated by Cheshire Antiques Consultant LTD, 2026.

Professionally examined and conserved by Vanessa Andrew M.A., Fine Art Conservator, Cheshire, June-July 2026.

fig 8. An 18th-century oil painting depicting King William III in a curled wig and ermine cloak, set within an oval aperture inside an ornate rectangular gold carved frame. — fig 8. 18th Century Oil Portrait King William III

Exhibition History

Privately loaned and exhibited at The Famous Lord Hill Museum, July 2026.

Conservation

Professionally examined and conserved in 2026. Examination confirmed historic lining, extensive craquelure and areas of previous overpainting. UV fluorescence examination formed part of the assessment.

fig 9. An 18th-century oil painting depicting King William III in a curled wig and ermine cloak, set within an oval aperture inside an ornate rectangular gold carved frame. — fig 9. 18th Century Oil Portrait King William III

Treatment included surface cleaning, selective varnish removal, filling of localised losses, sympathetic retouching, conservation varnishing and securing the canvas to its strainer.

An older discoloured varnish layer was retained following professional assessment.

fig 10. An 18th-century oil painting depicting King William III in a curled wig and ermine cloak, set within an oval aperture inside an ornate rectangular gold carved frame. — fig 10. 18th Century Oil Portrait King William III

A professional Condition Report, Treatment Report and photographic conservation record accompany the painting.

Dimensions

Painting: approximately 73.5 x 63 cm or 28.9 x 24.8 inches.

Overall framed: approximately 104 x 86 x 6 cm or 40.9 x 33.9 x 2.3 inches.

fig 11. An 18th-century oil painting depicting King William III in a curled wig and ermine cloak, set within an oval aperture inside an ornate rectangular gold carved frame. — fig 11. 18th Century Oil Portrait King William III

Condition

Presented in professionally conserved historic condition consistent with its considerable age. The historically lined canvas displays extensive craquelure, including areas of raised cracking, with previous overpainting particularly within the background.

fig 12. An 18th-century oil painting depicting King William III in a curled wig and ermine cloak, set within an oval aperture inside an ornate rectangular gold carved frame. — fig 12. 18th Century Oil Portrait King William III

The associated gilt frame has historic alterations, repairs and restoration and is not represented as demonstrably original.

Please examine all photographs carefully.

Certificate of Sale and Dealer Attribution

fig 13. An 18th-century oil painting depicting King William III in a curled wig and ermine cloak, set within an oval aperture inside an ornate rectangular gold carved frame. — fig 13. 18th Century Oil Portrait King William III

Supplied with a Certificate of Sale and Dealer Attribution issued by Cheshire Antiques Consultant LTD, recording the artwork's catalogue details, attribution, provenance as stated and details of the sale.