File:Pastel portrait of a lady of the Montagu family, possibly Dorothy, wife of 4th Earl of Sandwich, or his sister Elizabeth Courteney, by Francis Cotes, RA, 1758.jpg

Summary

 * Other information:
 * Sold at Sotheby's (Drawings), 13 November 1980, lot 110.
 * Signed and dated. Pastel, 61 x 45.5 cm.
 * Provenance : Earl of Sandwich.