Caspar de Robles or Gaspard di Robles (Madrid, 1527 – Antwerp, 1585) also known as Billy in Artois, was Stadholder of Friesland and Groningen at the beginning of the Eighty Years' War (reign: 1568 to 1576).
Read more about Caspar De Robles: Family, Military Life, Civil Achievements, Decline