From Chapter 2:
When Robert, Earl of Essex, and Henry, Earl of Southampton, were tried for high treason in Westminster Hall on February 19, 1600-1, the members of the House of Lords, who with the Judges formed the Court, if we may believe the French Ambassador of the time, behaved in a remarkable and unseemly manner. In a letter to Monsieur de Rohan, the Ambassador declared that while the Earls and the Counsel were pleading, their lordships guzzled and smoked; and that when they gave their votes condemning the two Earls, they were stupid with eating and "yvres de tabac"—drunk with smoking. This was probably quite untrue as a representation of what actually took place; but it would hardly have been written had smoking not been a common practice among noble lords.

From Chapter 7:
Fielding himself smoked his pipe. When his play "The Wedding Day" was produced by Garrick in 1743, various suggestions were made to the author as to the excision of certain passages, and the modification of one of the scenes. Garrick pressed for certain omissions, but—"No, damn them," said Fielding, "if the scene is not a good one, let them find that out"; and then, according to Murphy, he retired to the green-room, where, during the progress of the play, he smoked his pipe and drank champagne. Presently he heard the sound of hissing, and when Garrick came in and explained that the audience had hissed the scene he had wished to have modified, all Fielding said was: "Oh, damn them, they have found it out, have they!"

Simon Fraser, Lord Lovat, the crafty old Jacobite who took part in the rising of 1745 and who was executed on Tower Hill in 1747, was a smoker. The pipe which he was reported to have smoked on the evening before his execution, together with his snuff-box and a canvas tobacco-bag, were for many years in the possession of the Society of Cogers, the famous debating society of Fleet Street.