In William Weddell’s day this room was the dining room. Robert Adam designed the original decoration in 1767-9 in French grey, black and buff colours, and the richness of the plaster shows the work of Joseph Rose.
The ends of the room are apsidal with impressive columns, their Corinthian capitals crisply carved in wood. In the western apse stands the fourth Adam alabaster urn, originally intended to cast light over a carved sideboard; the other three urns are in the Dining Room.
The 3rd Lord Grantham made the room into his library in 1807 and later generations have kept it that way. The French commode under the alabaster urn is of the Louis XV period, as is the bureau-plât in tulipwood and kingwood between the windows. On either side are early nineteenth-century library steps and a rosewood library table. Above the fireplace on the overmantel stand a charming French clock inscribed ‘du Tertre’, two Meissen plates, and four Chinese bottles.