William O’Brien, Irish nationalist, journalist, agrarian agitator, social revolutionary, politician, party leader, newspaper publisher, author and Member of Parliament (MP) in the House of Commons of the United Kingdom of Great Britain and Ireland, dies suddenly on February 25, 1928 at the age of 75 while on a visit to London with his wife.

O’Brien, who is for several years second only to Charles Stewart Parnell among Irish Nationalist leaders, is born on October 2, 1852 in Mallow, County Cork. He is perhaps most important for his Plan of Campaign (1886), by which Irish tenant farmers withhold all rent payments from landlords who refuse to lower their rents and instead pay the money into a mutual defense fund on which evicted tenants can draw.

O’Brien shares his primary education with a townsman with whom he is later to have a close political connection, Canon Patrick Augustine Sheehan of Doneraile. He enjoys his secondary education at the Cloyne diocesan college, which results in his being brought up in an environment noted for its religious tolerance. He greatly values having had this experience from an early age, which strongly influences his later views for the need of such tolerance in Irish national life.

A journalist from 1869, O’Brien is appointed editor of the Irish Land League’s weekly United Ireland by Parnell in 1881. In October of that year the British authorities suppress the paper and put O’Brien in Kilmainham Gaol in Dublin, along with Parnell and others. There he draws up a No Rent Manifesto, which, when read at a Land League meeting, results in the outlawing of the League. Released from prison in 1882, he resumes the editorship of United Ireland, and in 1883 he is elected to the British House of Commons, remaining there until 1895. His “plan of campaign” is disavowed by Parnell but nonetheless stirs up fierce agitation. To suppress the movement, the British government passes the Criminal Law and Procedure (Ireland) Act 1887, under which O’Brien is jailed again.

For some time following the Katherine O’Shea divorce case (1889–90), in which Parnell is correspondent, O’Brien attempts to mediate between the Parnellites and their opponents, although he sides with the majority in rejecting Parnell’s continued leadership of the Irish Home Rule struggle. In 1902 he supports the Land Conference, which secures agreement between landlords and tenants’ representatives and results in George Wyndham‘s Land Purchase Act (1903), which is designed to turn Irish tenant farmers into occupying owners.

In 1898 O’Brien founds the United Irish League, and in 1910, after control of that group passes to the Parnellite John Redmond, he establishes the All-for-Ireland League in opposition to the older organization. Most of his personal following, however, join Arthur Griffith’s Sinn Féin party by the end of World War I.

Retiring from political life, O’Brien contents himself with writing and declines Éamon de Valera‘s offer to stand for Fianna Fáil in the 1927 general election. He dies suddenly at the age of 75 on February 25, 1928 while on a visit to London with his wife. His remains rest in Mallow, and one of the principal streets in the town bears his name to this day. His head-bust overlooks the town Council’s Chamber Room and one of his finest portraits hangs in University College Cork.