Titan Fine Art has dated this piece to the 18th Century.
The sitter is Sarah Wollaston who was a daughter of Daniel Waldo and Anne (Hannah) Mercer (married 1707). Sarah was born in Cheapside (London) in April 1708. She married Israel Wollaston (1701-1765), who descended from an ancient family seated in Staffordshire, and was a respectable solicitor in Chancery Lane (London). Their marriage was in 1726 when Sarah was 18 years old and it is most likely that the portrait was commissioned to celebrate this marriage. Together the couple had more than 20 children but they all died young. In the 1806 “Obituaries and Anecdotes of Remarkable Persons” of The Gentleman's Magazine, and Historical Chronicle, Volume 76, Part 1 Sarah was described as “quite a character but a respectable one, and respectably connected”. It accounted that she had remembered the building of the Assembly House at Wanstead (which was one of England's most magnificent Palladian houses rivalling a royal palace and was known as the “English Versailles”) and she attended its opening in 1725. At the opening she danced with the Lord (Lord Castlemaine (1680-1750) who was the gentleman of the house) and also Sir Fisher Tench, 1st Baronet (c.1673-1736) who was an M.P. and one of the first directors of the Bank of England (see William Hogarth’s painting of The Ballroom and Lord Castlemaine c.1728 attached). She was a great niece to Sir Edward Waldo (c.1631-1707) and spent her summers at Forty Hall in Enfield which was the home of Sir Edward’s daughter Grace Baroness Hunsdon (c.1683-1729). It is worth noting that a portrait of Grace has been attributed to Michael Dahl.

In her later years she was “remarkable in her person and was very long a frequenter of Lincoln's Inn Gardens with her lap dog ‘Psyche’ on her arm”. This pet she provided for in her will by way of a weekly pension for the rest of her life. Her relative Sir Thomas Fowke and Mrs Sturt (the heiress of the families of Pitfield of Hoxton and Solomon Astley) visited her often. When her husband died she removed to a house in Leytonstone Essex which was one night plundered of valuables. One of the robbers allegedly colluded with some of her servants and they “sat on her bed and not suffering her to stir”. In 1779 or 1780 a few years after this robbery she moved to Newington (London) in the house of the great and celebrated English philanthropist John Howard (c.1725-c.1790). Here she spent the remainder of her life dying in 1806 in her 98th year. Among a considerable number of valuable trinkets, pearls, and diamonds which she has distributed among her various friends was an excellent miniature picture of her husband in a beautiful white wig containing 100 curls. The portrait was noted to be a faithful likeness of Israel when a member of Dr Calamy's meeting house at Westminster c.1730 (a Presbyterian English nonconformist church). Her executor was Colonel Sibthorpe, M.P. for the City of Lincoln. She was buried at Bayford Church where many years earlier she had placed an elegant monument for her husband and herself and at least one of her children.

Her husband descended from a branch of the Wollaston family anciently from Staffordshire and later settled at Shenton Hall, Leicestershire and Finborough Hall in Suffolk. Israel’s great grandfather, Richard Wollaston (1635-1691) of Loseby Hall, was Cromwell's “gun founder" and was a Major in the parliamentary army in 1645. He was later Master of the Ordnance to King Willian III. In 1690 a year before his death he applied for the return of the sum of £10,000 he had loaned to the then King William III. The Treasury Records contain the entry: "£140 paid to John Wollaston for the use of his father Richard on a/c of £10,000 part of £20,000 lent the Ki
Titan Fine Art has dated this piece to the 18th Century.
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