When was the Dutch artist who was part of Art Concret born?
Theo van Doesburg Theo van Doesburg (] , 30 August 1883 – 7 March 1931) was a Dutch artist, who practiced painting, writing, poetry and architecture. He is best known as the founder and leader of De Stijl.
Tethart Philipp Christian Haag Tethart Philipp Christian Haag (Kassel, 22 May 1737 – The Hague, 23 August 1812) was a Dutch artist and court painter to William V of Orange-Nassau and the director of cultural institutions in The Hague.