John Somers (1651-1716), lawyer and Whig politician, as well as a bibliophile and a collector of prints and drawings. The sitter is identified in an inscription on the verso, which suggests that he was painted between 1689, when Somers was knighted, and 1691 when Riley died, when the sitter was between 38 and 40 years of age. Although his costume suggest a date nearer to 1680, and therefore the inscription could have been added on at a later date. John Riley (1646-1691) was an acclaimed English portrait painter. While his early career is obscure, following the death of Lely in 1680 he was celebrated as one of the leading portraitists in the country, rivalled only by Kneller.