The Palace of Truth is a three-act blank verse "Fairy Comedy" by W. S. Gilbert first produced at the Haymarket Theatre in London on 19 November 1870, adapted in significant part from Madame de Genlis's fairy story, Le Palais de Vérite. The play ran for approximately 140 performances and then toured the British provinces and enjoyed various revivals even well into the 20th century. There was also a New York production in 1910.After more than a century of inquiry, researchers in 2012 concluded that the three genera of Lemurs were named after characters in The Palace of Truth in 1870 by British zoologist John Edward Gray. Source: Wikipedia (en)