The Portraitist of the Gambier Lineage Margaret Gambier, known to history as Lady Middleton, operated within the private, high-stakes circles of the eighteenth-century British aristocracy. She was not a professional painter seeking public acclaim, but an artist whose work functioned as a vital tool for family record and status. Her output is defined by its intimacy and its connection to the social fabric of the era. To look at her wor…