Brocket Hall early held variously of Hatfield Manor and the Bishop of Ely. Sir Matthew Lamb's son was Peniston Lamb, 1st Viscount Melbourne and he was often visited at Brocket Hall by the Prince Regent, who had a liaison with Lady Melbourne. The next owner was William Lamb, 2nd Viscount Melbourne, who was Queen Victoria's first Prime Minister from 1835–41, when she regularly visited. His wife, Lady Caroline, infamously had an affair with Lord Byron causing Lord Melbourne much embarrassment. For one of his birthdays she held a state banquet in the Saloon, at which she had herself served from a large
William Lamb, 2nd Viscount Melbourne controversy regarding the hanging of Dic Penderyn, a protester in the Merthyr Rising who was then, and is now, widely judged to have been innocent. He appears to have been executed solely on the word of Melbourne, who sought a victim in order to 'set an example'. The disturbances over reform in 1831–32 were countered with the enforcement of the usual laws; again, Melbourne refused to pass emergency legislation against sedition. After Lord Grey resigned as Prime Minister in July 1834, the King was forced to appoint another Whig to replace him, as the Tories were not strong enough to