called Mary Armistead Lightfoot (Mrs. Philip Lightfoot, 1696-1775)

This portrait is sometimes attributed to Charles Bridges but it bears stylistic similarity to ca. 1740s-1750s portraits by artists like Robert Feke. Mary Armistead married Philip Lightfoot of Sandy Point. She was a daughter of William Armistead.

The subject wears a dark green dress with a jeweled clasp. She is inside a painted oval.

See: Yale University Art Gallery ; Lyon G. Tyler, “The Lightfoot Family,” William and Mary Quarterly 3, 2 (October 1895): 110.