Holding Cells For POWS

From Historic Pittsburgh:

....Waterford, Pa....the stockade fort built by Major Ebenezer Denny, in 1794, was later commanded by Lieutenant Martin, and was succeeded by a new blockhouse, built in 1797, which was used as a storehouse and place of imprisonment of prisoners during the War of 1812, and later was connected with other buildings and turned in to the 'Blockhouse Hotel.'"  [Source]

This source cited the hotel's name as Le Boeuf.