Portrait of The Hon. Mrs John Beresford (née Montgomery) (?1757-1788)

Although Hamilton was primarily known for pastel work, this portrait showcases his adaptation to other mediums. The muted gray background, brown dress with white lace collar, and the subject's dark updo hairstyle exemplify the Rococo emphasis on ornamental yet restrained beauty.

The painting is part of the National Gallery of Ireland's collection. Details of its provenance before entering the gallery are not specified in available information.

Created in the late 18th century, the portrait encapsulates the aesthetic values of the Rococo era, with its focus on delicacy and ornamental detail. It also represents Hamilton's successful transition from pastels to other painting media.