Willem van der Haegen

D. Willem van der Haegen (1430; Flanders – 21 December 1507/9; São Jorge, Azores), or Willem De Kersemakere (also spelled Kaasmaker or Kasmach), known in Portuguese as Guilherme da Silveira, or Guilherme Casmaca, was a Flemish-born Azorean entrepreneur, explorer, and colonizer. He was a pioneer colonizer in Azorean history and his descendants formed part of the original Azorean nobility.

Willem van der Haegen

D. Willem van der Haegen (1430; Flanders – 21 December 1507/9; São Jorge, Azores), or Willem De Kersemakere (also spelled Kaasmaker or Kasmach), known in Portuguese as Guilherme da Silveira, or Guilherme Casmaca, was a Flemish-born Azorean entrepreneur, explorer, and colonizer. He was a pioneer colonizer in Azorean history and his descendants formed part of the original Azorean nobility.