At the toughest time of his life, the painter was supported by an unlikely soulmate, Joseph Roulin, a postman in Arles. It was a friendship that would benefit art history.

Van Gogh lived a further 19 months, producing a staggering 70 paintings in his last 70 days, and leaving one of art history's most treasured legacies Van Gogh's portraits placed him in the heart ...