My grandfather and his family lived in a small village called Brzozowa, in NE of Poland during World War 2. He was the mayor of the village, and they were routinely hiding Jewish families in their basement and attic during the time when Nazis were occupying those territories. One of the Jewish families that lived there, showed up to their home with a horse carriage full of possessions and treasures. In order to not lose it to the occupying army who were stationed in town, they had to bury the treasure somewhere in the 10 acre garden in the back of the home. the Jewish family was then forced to flee at last minute notice, as German soldiers were going home to home and performing thorough searches. It is said that their treasure was left behind and never recovered. One of their family descendants showed up to look for it in the 1950s after the war was over but was unsuccessful. My grandfather, who was the only other person who knew of the location, was taken into German work camps and later escaped into a city, where he died of cancer shortly after, never being able to return to his home town. The treasure remains buried to this day.