Here is a taste of an article at NJ.com:
A restoration project at Liberty Hall Museum’s wine cellar unearthed spirits 221 years old that had been shipped to the sleepy Elizabethtown cottage shortly after the American Revolution.
During the six-month revamp, the museum discovered almost three cases of Madeira wine from 1796 and about 42 demijohns from the 1820s.
Some of the original Madeira stock was shipped to the second generation who lived at Liberty Hall, in anticipation of John Adams’ presidency. Although Liberty Hall President John Kean was well aware of the wine collection, he couldn’t have imagined its historical significance…
The museum, originally constructed in 1760, was built as a country getaway by the then prominent New York lawyer, William Livingston. Livingston would go on to serve in the First and Second Continental congresses, become New Jersey’s first elected governor and sign the United States Constitution.
The Kean family was the second generation to live at Liberty Hall, taking over the original estate in 1811. Multiple generations of the Keans continued to live at the estate until 1973, when the home was designated a National Historic Landmark. The family has worked to preserve and enhance the estate’s invaluable character.