The two main political parties during the era remained the Whigs/Liberals and the Conservatives; by its end, the Labour Party had formed as a distinct political entity. These parties were led by such prominent statesmen as Lord Melbourne, Sir Robert Peel, Lord Derby, Lord Palmerston, Benjamin Disraeli, William Gladstone, and Lord Salisbury. The unsolved problems relating to Irish Home Rule played a great part in politics in the later Victorian era, particularly in view of Gladstone's determination to achieve a political settlement in Ireland.