Theo van Doesburg 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. He was married to artist, pianist and choreographer Nelly van Doesburg. Theo van Doesburg was born Christian Emil Marie Küpper on 30 August 1883, in Utrecht, the Netherlands, as the son of the photographer and Henrietta Catherina Margadant. After a short training in acting and singing he decided to become a painter. He always regarded his stepfather, Theodorus Doesburg, to be his natural
Theo van Wijngaarden Theo van Wijngaarden Theo van Wijngaarden (27 February 1874, Rotterdam – 4 November 1952, Voorburg) was a Dutch art forger. Van Wijngaarden was born in Rotterdam and later lived in The Hague. Associated often with fellow art forger Han van Meegeren, van Wijngaarden was a lesser artist whose legitimate income came largely from restoration, working with cheaply purchased pictures and moving them to other areas of Europe to sell for a profit. He worked on several of van Meegeren's well known forgeries, including "Frans Hals" and "Smiling Girl", a painting once thought to be a work of Dutch painter Johannes