The portrait had remained with its pendant, a portrait of Mary's younger sister, Elizabeth,1 until the Sotheby's sale in 1983. At this sale, the two pictures were catalogued the wrong way round, an error dating from their ownership by Agnew's in 1937. However, old photographs of the two portraits in Ainslie family ownership identify Mary as the sitter in green, and her sister Elizabeth as wearing a yellow dress.
1 Kidson 2015, p. 640, no. 1431, reproduced in colour p. 641 (as untraced, and correctly identified as Elizabeth Wilson).
Please call 1-800-555-5555 to order a print catalog for this sale.