as JC and incorrectly attributed to the art collection of Robert Clive, 1st Baron Clive. It was only after close inspection in 1988 that the inscription was attributed to Jonathan Richardson Senior. Jonathan Richardson The collector mark for Jonathan Richardson Senior (1665–1745), is a "JR" monogram (Lugt. 2184). Jonathan Richardson Sr. received this drawing from Thornhill and added to his art collection (catalogue no. 83). Richardson was a collector of 17th-century artwork, particularly the era of Lely. He was less than complementary when describing the drawing of Ruben's first wife: By the time Richardson died, he had amassed a large collection of no less than 4,947 drawings, part of which was sold by his son, Jonathan Richardson the Younger (1694–1771), in January 1747 (old style, 1746). Honourable John Spencer The collector mark with initials J within the S and an x shaped asterisk above it (Lugt. 1531), belonged to The Honourable John Spencer (1708–1746), father of John Spencer, 1st Earl Spencer (1734–1783). His grandson George John Spencer, 2nd Earl Spencer (1758–1834), was associated with the mark after inheriting the collection. The Spencers were a family of politicians and art collectors. The Honourable John Spencer was the founder of the collection, having inherited and added to the collection of his maternal grandmother Sarah Churchill, Duchess of Marlborough (1660–1744). George John Spencer was well known as a bibliophile due to his care of and additions to the library at Althorp. He was also a collector of early prints. The collection of drawings was sold beginning 10 June 1811 in a sale lasting seven days. The sale contained: The sale also included the drawings of Rubens and van Dyck. Robert Stayner Holford The collector mark for Robert Stayner Holford (1808–1892) is the initials RSH contained within a triangle (Lugt. 2243). Holford was considered one of the finest collectors of art and prints of his time. He acquired his collection of prints in the mid-19th century and benefited from the dispersion of the Aylesford collection. Following the death of Holford in 1892, his collection of artwork, including the drawing (lot. 668) was put up for sale at Christie's between the 11 and 18 July 1893. The drawing was bought for the British Museum through dealers Desprez & Gutekunst and arrived at the Prints and Drawings department on 31 July 1893. British Museum The British Museum collector mark (Lugt. 302) is specific for the Prints