A Shadowy Master of the Jacobean Era In the grand, sweeping narrative of English art history, certain names shine with a flamboyant brilliance that commands immediate attention, such as Rubens or Rembrandt. Yet, tucked within the more subtle folds of the seventeenth century lies the work of Gilbert Jackson, an artist whose presence is felt through a quiet, meticulous elegance rather than theatrical bravado. A figure shrouded in much h…