All that remained of his ambitions was Castle Coole itself, and that was really more a source of satisfaction to posterity than to himself, for he effectively handed over his various properties to his son and heir, Somerset, on his coming-of-age in 1795.
His ambitions were reduced to just Castle Coole, which provided more satisfaction for posterity than for him, as he handed over all of his other possessions to his son, Somerset, when he came of age in 1795.