Arthur Brand 'Portrait of a Young Girl' is believed to have been sold during an auction in 1940 A painting stolen from a Jewish art collector by the Nazis during World War Two has been found in the home of descendants of a notorious Dutch SS collaborator, an art detective has said. Portrait of a Young Girl, by Dutch artist Toon Kelder, is believed to have hung for decades in the home of Hendrik Seyffardt's family, Arthur Brand said. It had belonged to Jewish art dealer Jacques Goudstikker, who died while fleeing the Nazi invasion of the Netherlands in 1940, leaving behind a collection of more than 1,000 paintings. The case was brought to Brand's attention by a man who told him he was a descendant of Seyffardt and that he was "disgusted" to learn his family had kept the artwork for years. Seyffardt was a Dutch general who commanded a Waffen-SS unit of volunteers on the eastern front before he was assassinated by resistance fighters in 1943.…