Helen Carte Boulter, also known as Helen Lenoir, was a Scottish businesswoman known for her diplomatic skills and grasp of detail. Beginning as his secretary, and later marrying, impresario and hotelier Richard D'Oyly Carte, she is best remembered for her stewardship of the D'Oyly Carte Opera Company and Savoy Hotel from the end of the 19th century into the early 20th century.

Gilbert and Sullivan refers to the Victorian-era theatrical partnership of the dramatist W. S. Gilbert (1836–1911) and the composer Arthur Sullivan (1842–1900) and to the works they jointly created. The two men collaborated on fourteen comic operas between 1871 and 1896, of which H.M.S. Pinafore, The Pirates of Penzance and The Mikado are among the best known.