George McCormick was a carpenter and cabinetmaker who made furniture for Adena. McCormick grew up in Kentucky, fought in the Indian Wars with territorial Governor Arthur St. Clair in the 1790s, and then moved to Washington to work on the capitol in 1802. Family tradition has it that Latrobe recommended McCormick to Worthington as the best man to take charge of the carpentry, trim, and interior woodwork of Adena. McCormick made chair rails, mantelpieces, and stairs, and exterior cornices and shutters.

After the house was completed, McCormick lived on the hilltop for another year making furniture for the Worthingtons, including a large banquet table, two sideboards, a card table, a chest of drawers, and beds. Several of his pieces are displayed in the house.

Among the other mechanics [Thomas Worthington] induced to remove to the West for this purpose, was a very excellent cabinet maker, Mr. [George] McCormick, with his wife and several children, remarkably well brought up by their excellent mother. They occupied an adjacent tenant’s house whilst he was engaged in constructing tables, bureaus, sideboards, wardrobes, clock-cases, etc., most or all of which are still in the possession of the various branches of the family. These were composed either of veneers or logs of mahogany brought overland, or cherry wood from the forest seasoned at the kiln at Adena. Hinges and locks were also sent out, with glass, table-ware, etc. . . .

For a year or more after the family had removed to the new residence (during the winter of 1807-8), the rooms of our firsts habitation were used as workshops for the purposes mentioned above. Having served its purpose, it was finally taken down and removed, the long gravel walk passing over its foundation.

From Sarah Worthington King Peter,
Private Memoir of Thomas Worthington (1882), pp. 57-58.