Surtees, A Catalogue Raisonné, vol. 1, 183 (no. 419).
The sitter is Georgina Robertson, who would later become Mrs. Fernandez (see DGR's 1874 portrait of her). She was the daughter of either Charles Robertson (1844-1891) or Henry Robert Robertson (1839-1921), both contemporary painters (see DGR's reference to Robertson in his letter of 30 July 1869 to Jane Morris,
Fredeman, Correspondence, 69. 103