Heinrich Thannhauser (born 16 February 1859 in Hürben, today a district of Krumbach (Swabia); died 1934 on the German-Swiss border) was a German gallery owner and art collector. As an art dealer, he was one of the most important promoters of early Expressionist art in Germany.
Thannhauser was born 16 February 1859 in Hürben (presently Krumbach, Swabia), the third of six children, to Jonas Thannhauser (1833âÂÂ1890), a sawn goods merchant, and Michle "Mina" Thannhauser (née Loew).
His paternal Catholic family carried the surname Thannhauser and passed it down to him. His father Jonas Thannhauser married his mother Michle "Mina" Loew who was from a Jewish family. Following this marriage, Mina and members of her family are recorded in later sources under the surname Thannhauser. This union gave rise to a German-Jewish Thannhauser branch of the family.
Initially, Thannhauser completed an apprenticeship as tailor and had a women's clothing store between 1885 and 1897.
He founded his Munich Modern Gallery (Moderne Galerie)in 1904. At first he exhibited the artworks of French Impressionists such as ÃÂdouard Manet, Edgar Degas and Paul Gauguin. Later works by Pablo Picasso and Georges Braque were added.
In 1909, Thannhauser separated from his partner Franz Josef Brakl and continued to run the gallery under the name Galerie Thannhauser. The first exhibition of the Neue Künstlervereinigung München took place in the Arco-Palais in the same year. In 1911 he began collaborating with Der Blaue Reiter. In 1918 he had himself painted in Berlin simultaneously by Lovis Corinth and by Max Liebermann; the one he sat for a portrait in the morning, the other in the afternoon.
In 1920 his nephew Siegfried Rosengart opened a branch of the gallery in Lucerne.
In 1934 in attempting to flee from the Nazis to Switzerland, Thannhauser died of a stroke at the border.
On 26 May 1891, Thannhauser married Charlotte Nachtigall, originally of Nuremberg, at Heidingsfeld (presently a part of Wurzburg). They had one son;
Thannhauser died on 24 November 1935 in Lucerne, Switzerland aged 76.