Unico Wilhelm van Wassenaer Count Unico Wilhelm van Wassenaer (born November 2, 1692, Delden – died November 9, 1766, The Hague) was a Dutch diplomat and composer. His most important surviving compositions are the Concerti Armonici, which until recently have been falsely attributed to the Italian composer Giovanni Pergolesi (1710-1736). Unico Willem Van Wassenaer was born into a distinguished family of wealth, power and accomplishment. He studied law and other courses in Leiden and in 1723 married Dodnea Lucia van Goslinga Read more on Last.fm