SHELBURNE — Shelburne Museum has acquired a portrait by John Singleton Copley entitled “Mrs. John Scollay (Mercy Greenleaf),” a pendant painting to the portrait in the museum’s permanent collection, “Mr. John Scollay,” reuniting the long-separated portraits of wife and husband, Shelburne Museum Director Thomas Denenberg announced. John Scollay, a chairman of the Boston Board of Selectmen and member of the Sons of Liberty, commissioned Copley (1738-1815), the preeminent portraiture artist in the American col … (read more)