Unico Wilhelm Wassenaer Darmowa muzyka arkusza
- Born: 2nd November 1692
- Died: 6th November 1766
- Birthplace: Delden, Holandia
Unico Willem was born in Delden (Netherlands), into a family of generals, admirals and personages holding high positions in the government of the Dutch Republic, gaining more and more wealth through marriage and their own influential positions.