The memory of Gustav has been honored greatly, resulting in embroidered history books, commemorative coins, and the annual ski event Vasaloppet (the largest ski event in the world with 15,000 participants). The city of Vaasa in Finland was named after the royal house of Vasa in 1606. 18th century playwrights and librettists used his biography as the source for some of their works, including the 1739 "Gustavus Vasa" by Henry Brooke (the first play banned under the Licensing Act 1737, due to Robert Walpole's belief that the play's villain was a proxy for himself) and the 1770 "Gustavo primo re di Svezia". The name "Gustavus Vasa" was also given to Olaudah Equiano, a prominent Black British abolitionist.