Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Frederick James Lamb, 3rd Viscount Melbourne PC, GCB (17 April 1782-January 29, 1853), known as the Lord Beauvale from 1839 to 1848, was a British diplomat. Lamb was a younger son of Peniston Lamb, 1st Viscount Melbourne, and his wife Elizabeth Milbanke, and the younger brother of Prime Minister William Lamb, 2nd Viscount Melbourne. He married Alexandrina Julia Theresa Wilhelmina Sophia Gräfin von Maltzan, daughter of Joachim Charles Leslie Mortimer Graf von Maltzan.