Painted for the sitter's mother, Georgiana, Countess Spencer [1737-1814], wife of John Spencer, 1st earl Spencer [1734-1783], Althorp, Northamptonshire; by descent[1] to John, 7th earl Spencer [1892-1975], Althorp; purchased 1924 by (Duveen Brothers, Inc., London and New York); sold 13 April 1925 to Andrew W. Mellon, Pittsburgh and Washington, D.C.; deeded December 1934 to The A.W. Mellon Educational and Charitable Trust, Pittsburgh; gift 1937 to NGA. [1] Additional Earls Spencer per The Getty Provenance Index, and NGA curatorial files.