Question: When was the Vincent van Gogh Foundation established?
About the article "Sunflowers (Van Gogh series)", section "Provenances".

Candidate passages:
This painting never left the artist's estate.
Since 1962, it has been in the possession of the Vincent van Gogh Foundation, established by Vincent Willem van Gogh, the artist's nephew, and on permanent loan to the Van Gogh Museum, Amsterdam. 
In 2008 Yolande Clergue’s original ambition to create a Fondation Van Gogh was given new momentum by Luc Hoffmann who established a permanent framework called Fondation Vincent van Gogh Arles for activities designed to preserve the memory of Vincent Van Gogh in Arles and to foster contemporary art. 
In 1983 Yolande Clergue, a curator married to the photographer Lucien Clergue, founded the Association for the Creation of the Fondation Van Gogh (subsequently known simply as the Fondation Van Gogh).
In 1985 Yolande Clergue proposed initiating a collection of works executed by contemporary artists in tribute to Van Gogh, including Francis Bacon.
Bacon responded enthusiastically by producing a painting specifically for the foundation.
More than ninety artists chose to contribute to this homage to Vincent van Gogh.
In 2008 Yolande Clergue’s original ambition to create a Fondation Van Gogh was given new momentum by Luc Hoffmann who established a permanent framework for activities designed to preserve the memory of Van Gogh in Arles and to foster contemporary art.
This new foundation was officially established in 2010, under the name of the Fondation Vincent van Gogh Arles.
It iis now located in the Hôtel Léautaud de Donines. 
Vincent van Gogh's grandfather (born 1789) was also named Vincent van Gogh.
According to Vincent van Gogh's first biographer, his sister-in-law Johanna van Gogh, the grandfather was a pastor, and the son of Johanna van der Vin of Malines and Johannes van Gogh.
Johanna van Gogh writes that Johannes "was at first a gold-wire drawer like his father, but he later became a Bible teacher and a clerk in the Cloister Church at The Hague."
She describes him as an intellectual, duty-bound man who was awarded prizes and testimonials for his distinguished work.
A family legacy, from Vincent's great-uncle—a sculptor and a lifelong bachelor—allowed Vincent van Gogh (Johannes' son) to study divinity at the University of Leiden.
After successfully completing his studies and having become established at the parsonage of Benschop, Vincent van Gogh married E. H. Vrydag in 1810.
They remained married until Elisabeth's death on 7 March 1857; the Reverend Vincent van Gogh lived until 1874.
In July, 1881 Van Gogh made "Portrait of Artist's Grandfather" (F876).
The work was drawn in pencil and brown ink.
Then he used opaque white watercolor and a brown wash.
The drawing is owned by the Van Gogh Museum in Amsterdam. 
Old Church Tower at Nuenen (or "The Peasants' Churchyard") are names given to several oil paintings and drawings created in 1884 and 1885 by Vincent van Gogh.
Most reflect the way the 12th-century church looked in its better days when its spire was intact and its foundation formidable.
The spire was demolished in 1792 and the church tower was in the process of being torn down and sold for scrap as Van Gogh made the paintings.