John Russell, 1st Earl Russell, known by his courtesy title Lord John Russell before 1861, was a British Whig and Liberal statesman who served as Prime Minister of the United Kingdom from 1846 to 1852 and again from 1865 to 1866. Russell was born into the highest echelons of the British aristocracy, being the third son of John Russell, later 6th Duke of Bedford, and Georgiana Byng, daughter of George Byng, 4th Viscount Torrington. The Russell family had been one of the principal Whig dynasties in England since the 17th century, and were among the richest handful of aristocratic landowning families in the country. Scion of one of the most powerful aristocratic families, Russell was a leading reformer who weakened the power of the aristocracy. His great achievements, wrote A. J. P. Taylor, were based on his persistent battles in Parliament over the years on behalf of the expansion of liberty; after each loss he tried again and again, until finally, his efforts were largely successful. Source: [Wikipedia](https://en.wikipedia.org/wiki/John_Russell%2C_1st_Earl_Russell)