The enameling of transparent colorless glass was popular on the Continent after the mid-16th century, but it would be another two centuries before the practice was adopted in England. Great progress with this innovation was made by the Beilby family of craftsmen, which was located in Newcastle upon Tyne. William Beilby (1740-1819) and his younger sister Mary (1749-1797) enameled glasses in the ornate Rococo style from about 1762 until 1774. Early pieces, probably by William, were influenced by the heraldic engravings of his brother, Ralph. They include eight goblets bearing the royal arms of George III. The Beilbys’ later works were decorated with rustic scenes, gardens, and classical ruins. Some of these objects are signed with the surname only, so it is not possible to know which Beilby enameled them. These two signed goblets show the arms, crest, and motto of the earls of Pembroke and Montgomery. They were made for Henry, 10th earl of Pembroke (1733-1794).