Seamus Twomey (Irish: Séamus Ó Tuama), Irish republican activist, militant, and twice chief of staff of the Provisional Irish Republican Army, is born on November 5, 1919 on Marchioness Street in Belfast.
Twomey lives at 6 Sevastopol Street in the Falls district. Known as “Thumper” owing to his short temper and habit of banging his fist on tables, he receives little education and is a bookmaker‘s “runner.” His father is a volunteer in the 1920s. In Belfast he lives comfortably with his wife, Rosie, whom he marries in 1946. Together they have sons and daughters.
Twomey begins his involvement with the Irish Republican Army in the 1930s and is interned in Northern Ireland during the 1940s on the prison ship HMS Al Rawdah and later in Crumlin Road Jail in Belfast. Rosie, his wife, is also held prisoner at the women prison, Armagh Jail, in Northern Ireland. He opposes the left-wing shift of Cathal Goulding in the 1960s, and in 1968, helps set up the breakaway Andersonstown Republican Club, later the Roddy McCorley Society.
In 1969, Twomey is prominent in the establishment of the Provisional Irish Republican Army. By 1972, he is Officer Commanding (OC) of the Provisional IRA Belfast Brigade when it launches its bomb campaign of the city, including Bloody Friday when nine people are killed. During the 1970s, the leadership of the Belfast Brigade of the IRA is largely in the hands of Twomey and Ivor Bell.
In March 1973, Twomey is first appointed IRA Chief of Staff after the arrest of Joe Cahill. He remains in this position until his arrest in October 1973 by the Garda Síochána. Three weeks later, on October 31, 1973, the IRA organises the helicopter escape of Twomey and his fellow IRA members J. B. O’Hagan and Kevin Mallon, when an active service unit hijacks and forces the pilot at gunpoint to land the helicopter in the training yard of Mountjoy Prison. After his escape, he returns to his membership of IRA Army Council.
By June/July 1974, Twomey is IRA Chief of Staff for a second time. He takes part in the Feakle talks between the IRA and Protestant clergymen in December 1974. In the IRA truce which follows in 1975, he is largely unsupportive and wants to fight on in what he sees as “one big push to finish it once and for all.”
IRA informer Sean O’Callaghan claims that on January 5, 1976, Twomey and Brian Keenan give the go-ahead for the sectarian Kingsmill massacre, when ten unarmed Ulster Protestant workmen are executed by the Provisional IRA in retaliation for a rash of loyalist killings of Catholics in the area. It is Keenan’s view, O’Callaghan claims, that “The only way to knock the nonsense out of the Prods is to be ten times more savage.”
Twomey is dedicated to paramilitarism as a means of incorporating Northern Ireland into the Republic of Ireland. In an interview with French television on July 11, 1977, he declares that although the IRA had waged a campaign for seven years at that point, it can fight on for another 70 against the British state in Northern Ireland and in England. He supports the bombing of wealthy civilian targets, which he justifies on class lines. On October 29, 1977, for example, a no-warning bomb at an Italian restaurant in Mayfair kills one diner and wounds 17 others. Three more people are killed in similar blasts in Chelsea and Mayfair the following month. He says, “By hitting Mayfair restaurants, we were hitting the type of person that could bring pressure to bear on the British government.”
In December 1977, Twomey is captured in Sandycove, Dublin, by the Garda Síochána, who had been tipped off by Belgian police about a concealed arms shipment, to be delivered to a bogus company with an address in the area. They swoop on a house in Martello Terrace to discover Twomey outside in his car, wearing his trademark dark glasses. After a high-speed pursuit, he is recaptured in the centre of Dublin. The Gardaí later find documents in his possession outlining proposals for the structural reorganisation of the IRA according to the cell system. His arrest ends his tenure as IRA chief of staff. In the 1986 split over abstentionism, Twomey sides with the Gerry Adams leadership and remains with the Provisionals.
After a long illness from a heart condition, Twomey dies in Dublin on September 12, 1989. He is buried in the family plot in Milltown Cemetery, Belfast. His funeral is attended by about 2,000 people.