Att. Richard Cosway R.A. (1742-1821) - Mrs Jackson portrait

This delicately painted portrait of 'Mrs Jackson' is certainly linked to an engraving after Richard Cosway produced in 1794. The main difference is a lack of the Cupid figure in the watercolour which is seen in the engraving. The watercolour is highly detailed throughout and the face is particularly well drawn. The watercolour furthermore has a Whatman's watermark (see photos) and a 67 can be seen, suggesting the paper is from 1767. 
 
The curatorial notes on the engraving by the British Museum suggest that there is 'some uncertainty as to which Mrs. Jackson [is portrayed]. It is sometimes described as a portrait of the wife of Mr. J. Jackson, manager of the Edinburgh. However, Mrs. Thomas Jackson is the most probable candidate.' [1]
 
Medium: watercolour and pencil on paper, 22 x 13 cm, mounted. Inscribed below watercolour 'R Cosway RA'.
 
Provenance: Collection of Bill Thompson (Albany Gallery).
 
Condition report: some foxing and time staining (see photos).
 
References:
 
[1] British Museum website, https://www.britishmuseum.org/collection/object/P_1856-0308-26. Accessed: 25/11/2021.