<sod>The group was under the leadership of [[Michael Collins (Irish leader)|Michael Collins]]. The names<ref group="note">The "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.</ref> 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 [[Irish Republican Army|IRA]], published in 1970. Coogan identified Lemass as taking part in the killing of a British agent as a member of "Apostles" entourage that killed fourteen and wounded five [[United Kingdom of Great Britain and Ireland|British]] agents of the [[Cairo Gang]]. That day, 21 November 1920, became known as [[Bloody Sunday (1920)|Bloody Sunday]] – not to be confused with the [[Bloody Sunday (1972)|1972 Bloody Sunday]] in Derry City – when the [[Black and Tans]] attacked a [[Gaelic football]] game at [[Croke Park]] and shot at the crowd and players indiscriminately, killing 14 civilians.<eod>
<sod>The group was under the leadership of [[Michael Collins (Irish leader)|Michael Collins]]. The names<ref group="note">The "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.</ref> 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 [[Irish Republican Army|IRA]], published in 1970. Coogan identified Lemass as taking part in the killing of a British agent as a member of "Apostles" entourage that killed fourteen and wounded five [[United Kingdom of Great Britain and Ireland|British]] agents of the [[Cairo Gang]]. That day, 21 November 1920, became known as [[Bloody Sunday (1920)|Bloody Sunday]] – not to be confused with the [[Bloody Sunday (1972)|1972 Bloody Sunday]] in Derry City – when the [[Black and Tans]] attacked a [[Gaelic football]] game at [[Croke Park]] and shot at the innocent crowd and innocent players indiscriminately, killing 14 innocent civilians.<eod>