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 Lamb's hallmark was finding the middle ground. Though a Whig, he accepted (29 April 1827) the post of Chief Secretary for Ireland in the moderate Tory governments of George Canning and Lord Goderich. Upon the death of his father in 1828 and his becoming the 2nd Viscount Melbourne, of Kilmore in the County of Cavan, he moved to the House of Lords. He had spent 25 years in the Commons, largely as a backbencher, and was not politically well known. In November 1830, the Whigs came to power under Lord Grey. Melbourne was Home Secretary. During the disturbances of 1830–32