Alongside "The Twelve Apostles" Following the Easter Rising, Lemass remained active in the Irish Volunteers, carrying out raids for arms. Until November 1920, Lemass remained a part-time member of the Volunteers. In that month, during the height of the Irish War of Independence, twelve members of the Dublin Brigade of the IRA took part in an attack on British agents living in Dublin, whose names and addresses had been leaked to Michael Collins by his network of spies. The namesThe "Twelve Apostles" were Joe Leonard, Seán Doyle, Jim Slattery, Bill Stapleton, Pat McCrae, James Conroy, Ben Barret and Patrick Daly. Mick McDonnell, the first leader, was later succeeded by Daly and, in January 1920, three men were added – Tom Keogh, Mick O'Reilly and Vincent Byrne. Byrne was the last of the "Apostles" to die, in 1992, aged 92. of those who carried out Collins' orders on the morning of 21 November 1920 were not disclosed until author Tim Pat Coogan mentioned them in his book on the history of the IRA, published in 1970. Coogan identified Lemass as taking part in the killing of a British agent as a member of the "Apostles" assassin squad which killed thirteen (and wounded five other) British agents of the Cairo Gang. That day, 21 November 1920, became known as Bloody Sunday.
Alongside "The Twelve Apostles" Following the Easter Rising, Lemass remained active in the Irish Volunteers, carrying out raids for arms. Until November 1920, Lemass remained a part-time member of the Volunteers. In that month, during the height of the Irish War of Independence twelve members of the Dublin Brigade of the IRA took part in an attack on British agents living in Dublin, whose names and addresses had been leaked to Michael Collins by his network of spies. The namesThe "Twelve Apostles" were Joe Leonard, Seán Doyle, Jim Slattery, Bill Stapleton, Pat McCrae, James Conroy, Ben Barret and Patrick Daly. Mick McDonnell, the first leader, was later succeeded by Daly and, in January 1920, three men were added – Tom Keogh, Mick O'Reilly and Vincent Byrne. Byrne was the last of the "Apostles" to die, in 1992, aged 92. of those who carried out Collins' orders on the morning of 21 November 1920 were not disclosed until author Tim Pat Coogan mentioned them in his book on the history of the IRA, published in 1970. Coogan identified Lemass as taking part in the killing of a British agent as a member of the "Apostles" assassin squad which killed thirteen (and wounded five other) British agents of the Cairo Gang. That day, 21 November 1920, became known as Bloody Sunday.