Monsell served as the Sheriff of County Limerick in 1835.[2] In 1847, he was elected Member of Parliament for County Limerick as a Liberal, and represented the constituency until 1874. In 1850, he became a Catholic and thereafter took a prominent part in Catholic affairs, especially in Parliament. As a friend of Wiseman, Newman, Montalambert, W. G. Ward, and other eminent Catholics, he was intimately acquainted with the various interests of the Church, and his parliamentary position was often of great advantage to the Church.[1]
On 12 January 1874 Monsell was raised to the peerage as Baron Emly, of Tervoe in the County of Limerick.[4][1][2] He lost much of his popularity in Ireland during his later years, because of his opposition to the Irish National Land League and to the home rule movement in Ireland. His work being chiefly parliamentary, he wrote little, but published some articles in the Home and Foreign Review and a "Lecture on the Roman Question" (1860).[1]
Family
Lord Emly was twice married. He married firstly Lady Anna Maria Charlotte Wyndham-Quin (1814–1855), only daughter of Windham Quin, 2nd Earl of Dunraven and Mount-Earl, in August 1836,[1] with whom he had two sons, both of whom died in infancy. After her death on 7 January 1855,[2] he married Bertha (1835–1890), youngest daughter the Comte de Montigny of the house of Montigny de Perreux, in 1857, by whom he had one son Gaston (1858–1932), later the second Lord Emly, and one daughter Mary Olivia (1860–1942).[1][2] Lord Emly died in April 1894, aged 81.
Matthew Potter, William Monsell of Tervoe 1812–1894 Catholic Unionist, Anglo-Irishman, Foreword by Gearóid O Tuathaigh (Dublin: Irish Academic Press,2009).
Matthew Potter, 'A Catholic Unionist. The Life and Times of William Monsell, First Baron Emly of Tervoe 1812–1894', (unpublished Ph.D. thesis NUI Galway, 2001).