Sir William Gilbert was an English dramatist and librettist who was famous for his partnership with composer, Sir Arthur Sullivan. Gilbert was also a writer, illustrator, and caricaturist. Several synonyms for the name Sir William Gilbert include W.S. Gilbert, William Schwenk Gilbert, or Sir W. S. Gilbert. Gilbert's wit and humor made him a beloved figure in the world of theatre, and his works have become an important part of British cultural heritage. Some of the most famous shows that Sir William Gilbert co-wrote with Sir Arthur Sullivan include "The Pirates of Penzance," "H.M.S. Pinafore," and "The Mikado".