Viscount Melbourne
Peniston Lamb, 1st Viscount Melbourne (29 January 1745 – 22 July 1828), known as Sir Peniston Lamb, 2nd Baronet, from 1768 to 1770, was a British politician who sat in the House of Commons from 1768 to 1793. He was the father of Prime Minister William Lamb, 2nd Viscount Melbourne.