In what was the southern building, the wine dealer Mårten Hartman opened the tavern Källaren Rostock in 1643, an establishment much later featuring in the 45th epistle of Carl Michael Bellman. It retells the story of how Corporal Mollberg while attending the tavern got into trouble for playing the reel (called polska in Swedish, e.g. "a polish") of the Queen of Poland, and thus stirred up the temper of the gentlemen around him because of the disputed partition of Poland.
