Note: Do not rely on this information. It is very old.
Lansdowne First MarquisLansdowne First Marquis, see Shelburne,. Earl of Lansdowne], Henry Petty Fitz-Maurice (1780-1863), third Marquis, was born in London, and educated at Westminster and Cambridge. He entered Parliament as a Whig in 1802, and soon made his mark by his speech against Lord Melville's naval administration. In 1806 he (Henry Petty) was returned for Cambridge University, but in 1809 became a peer by the death of his elder brother. He was Chancellor of the Exchequer in Lord Grenville's Ministry, and in 1826 became Home Secretary under Canning. In the Goderich Ministry he was Foreign Secretary, and from 1831 till 1841 was President of the Council in Grey's Reform Ministry. After leading the Opposition to Peel's first Government in the House of Lords, he, in 1846, became Lord President under Lord John. Russell. In 1852 he declined to become Prime Minister, but was a Cabinet Minister without portfolio in the Coalition Ministry and in the first Palmerston Administration.