Daniel O'Connell - (6 August 1775 – 15 May 1847) (Irish: Dónal Ó Conaill), known as The Liberator or The Emancipator, was Ireland's predominant political leader in the first half of the nineteenth century who championed the cause of the Catholic tenants and small-landholders. He campaigned for Catholic Emancipation - the right for Catholics to sit in the Westminster Parliament, denied for over 100 years - and Repeal of the Union between Ireland and Great Britain.