Van Loo, passing by in 1720, bought it and later assisted the young painter.
Van Loo, according to critics, was also influenced by Dutch art.
Van Loo died on 10 January 1907.
In 1660, Van Loo fled the city after fatally stabbing someone during an altercation at an inn.
In van Loo's painting, Diana also sits in a forest clearing with a small group of companions, but the mood is very different.
When Van Loo departed the country, Eccardt remained and set up a portrait-painting business.
Vermeer's Diana has frequently been compared to van Loo's.
Van Loo is known for his conversational groupings, his use of a subtle color palette and his nudes.
Van Loo was a member of Belgium's squad for the 2007-09 International Challenge Trophy.
Van Loo painted many portraits.