Question: What was Van Gogh's brother's name?
About the article "Portrait of Dr. Gachet", section "Background".

Candidate passages:
Watercraft rowing, called "le rowing" by the French, was a sport picked up from the English and became popular by the 1880s.
Clubs and competitions were established for amateur sportsmen to meet on the Seine.
Van Gogh's friend John Peter Russell was an avid participant in local competitions.
In the summer of 1887 Russell and Van Gogh often met at the Van Gogh brother's apartment on Rue Lepic where Russell was shown Van Gogh's paintings of boats, bridges and islands along the Seine, which with Russell's interest in rowing may have been inspiration for his paintings of the Seine at Bougival and Le Pecq. 
Van Gogh's paintings of rose, or any flowers, are evocative of his quote, "Ah, what portraits could be made from nature with photography and painting."
Adrianus Jacobus Zuyderland was Vincent van Gogh's favorite model during his Hague period.
He appears in dozens of drawings, easily identified by his bald head and prominent white whiskers, and he was the model for the drawing which was the basis for van Gogh's later iconic painting "At Eternity's Gate". 
"Enclosed Field with Peasant" was inherited by van Gogh's brother, Theo van Gogh after his brother's death.
He gave the painting to his wife, Johanna van Gogh-Bonger as a gift.
In May 1905, if was sold to Paul Cassirer, and then to Robert von Mendelssohn.
It was inherited by his wife, Giulietta von Mendelssohn, upon his death, and upon her death, was passed to her children, Elenora and Francesco von Mendelssohn.
It was given on consignment to J.K. Thannhauser in New York, from where it was sold to Mrs. Caroline Mermon Fesler.
Mrs. Fesler gave the painting to the John Herron Art Institute, now known as the Indianapolis Museum of Art, in 1944. 
While in Saint-Remy interest began to build in van Gogh's work:   Theo, Van Gogh's brother, wrote in July 1889, that Camille and Lucien Pissarro, Père Tanguy, Erik Theodor Werenskiold and Octave Maus, secretary of the Les XX group in Brussels, had seen the paintings that he'd made in southern France.
On Van Gogh's behalf, Theo accepted an offer from Maus to exhibit Van Gogh's work at the Les XX group's upcoming exhibition.
Van Gogh's "Starry Night over the Rhone" and "The Irises" were exhibited at the Société des Artistes Indépendants on the third of September.
In January, 1890 six of Van Gogh's works were exhibited at the seventh exhibition of Les XX in Brussels along with, among others, Paul Cézanne, Camille Pissarro, Pierre-Auguste Renoir, Paul Signac and Henri de Toulouse-Lautrec.
Van Gogh's painting "The Red Vineyard" was sold to artist Anna Boch at the exhibition for 400 francs.
In the same month an article is published "Les Isole: Vincent van Gogh" in the "Mercure de France".
Ten of Van Gogh's works were presented at the March, 1890 Société des Artistes Indépendants.
Paul Gauguin, Claude Monet and Pissarro were quite impressed with his works.
Over this time, though, Van Gogh's health ebbed and flowed between periods of attacks, recovery and resumption of painting.
In April, 1890, near the end of van Gogh's stay at Saint-Paul's hospital, Theo wrote to his sister and mother, "I am so pleased that Vincent's work is being more appreciated.
If he were fit I believe that there would be nothing for me to desire, but it appears that this is not to be.
"The sale of "Red Vineyard" was the only sale of van Gogh's paintings made during his lifetime.