Art dealer in the context of "Auctions"

Theodorus "Theo" van Gogh (Dutch: [teːjoːˈdoːrʏs ˈteːjoː vɑŋ ˈɣɔx]; 1 May 1857 – 25 January 1891) was a Dutch art dealer and a younger brother of Vincent van Gogh. His support of his older brother's artistic ambitions and well-being allowed Vincent to devote himself entirely to painting. As an art dealer, Van Gogh played a crucial role in introducing contemporary French art to the public.

Van Gogh died at the age of 33, six months after his brother's death at age 37. Van Gogh owned almost all of his brother's artwork. His widow, Johanna van Gogh-Bonger, worked to promote the work of Vincent and keep the memory of her husband alive. In 1914, Van Gogh's remains were buried next to those of his brother Vincent.

Goupil & Cie is an international auction house and merchant of contemporary art and collectibles. Jean-Baptiste Adophe Goupil founded Goupil & Cie in 1850. Goupil & Cie became a leading art dealership in 19th-century France, with its headquarters in Paris. Step by step, Goupil established a worldwide trade in fine art reproductions of paintings and sculptures, with a network of branches and agents in London and other major art capitals across Continental Europe as well as in New York City and Australia. Les Ateliers Photographiques, their workshop north of Paris, in Asnières, was instrumental in their expansion from 1869. The leading figure of Goupil & Cie was Jean-Baptiste Adolphe Goupil (1806–1893). His daughter Marie married the French artist Jean-Léon Gérôme.

Johanna Gezina van Gogh-Bonger (4 October 1862 – 2 September 1925) was a Dutch editor who translated the hundreds of letters of her first husband, art dealer Theo van Gogh, and his brother, painter Vincent van Gogh.

Van Gogh-Bonger played a key role in the growth of Vincent van Gogh's posthumous fame.

Portrait of William Ewart Gladstone is an 1879 portrait painting by the British artist John Everett Millais. It depicts the politician William Ewart Gladstone who served as Prime Minister four times. It was one of a series of portraits of leading figures Millais produced during the era, including his Portrait of Benjamin Disraeli featuring Gladstone's political rival. The work was initiated by Millais himself, rather than being commissioned and was then bought for a thousand pounds by the art dealer William Agnew who sold it ten days later to the Duke of Westminster.

The painting was displayed at the Royal Academy Exhibition of 1879 at Burlington House in London. Louisa Knightley described It as "undoubtedly the picture of the year" while Gladstone himself considered it a "a very fine work". It was A mezzotint was produced by the engraver Thomas Oldham Barlow, who submitted a version as his diploma work when elected to the Royal Academy of Arts in 1881. The original painting has been in the collection of the National Portrait Gallery since 1957, having previously been in the Tate Gallery.