Melbourne Hall second Lord Melbourne, Queen Victoria's Prime Minister, was separated from his wife, Lady Caroline Lamb, in 1825, when her liaison with Lord Byron had become notorious. The house passed into the hands of the Cowper family when Emily Lamb, sister of the childless third and last Viscount Melbourne, married the 5th Earl Cowper. (She later married another Prime Minister, Lord Palmerston.) It remained in the Cowper family until Lady Amabel Cowper married Admiral of the Fleet Lord Walter Kerr who made Melbourne the family home in 1906. The current owner Lord Ralph Kerr also owns Ferniehirst Castle in Scotland. He
William Lamb, 2nd Viscount Melbourne a lurid fashion, which caused William even greater embarrassment, while the spiteful caricatures of leading society figures made them several influential enemies. Eventually the two were reconciled, and, though they separated in 1825, her death in 1828 affected him considerably. In 1816, Lamb was returned for Peterborough by Whig grandee Lord Fitzwilliam. He told Lord Holland that he was committed to the Whig principles of the Glorious Revolution but not to "a heap of modern additions, interpolations, facts and fictions". He therefore spoke against parliamentary reform, and voted for the suspension of "habeas corpus" in 1817 when sedition was rife.