Clann na hÉireann was a support organisation among Irish emigrants in Great Britain for Sinn Féin during the 1960s and its successor organisation the Workers' Party in the 1970s and the 1980s.
Consisting mainly of Irish emigrants, the Clann (as it was referred to by sympathisers) was set up in 1964 by the merger of Sinn Féin Birmingham branch and Sinn Féin London branch. Party President Tomás Mac Giolla came over and organised the merger with Seamus Collins from Birmingham who was the Clann Chairperson for most of its existence. Seán Ó Cionnaith became Clann organiser. Clann organized political meetings and protest marches and collected funds to support the movement's activities in Ireland. It was busiest in Birmingham and Glasgow, while their HQ was in Fulham. It supported the IRA, while the IRA recruited from the Clann's membership and maintained its own structure in Britain.[1]
Clann established contact with Irish organisations in Britain and also with left-wing organisations such as the Connolly Association and the Communist Party of Great Britain. However, it kept a certain distance from these groups, as when it disassociated itself from leftists who became involved in a clash outside the Irish Embassy in London in April 1965.[1]
Attempts were made in the mid-1960s to amalgamate Clann na hÉireann with the Connolly Association (which in turn shared some members with the Communist Party of Great Britain). However, despite the efforts of the Dublin leadership, this proposal was not accepted at the relevant Clann na hÉireann Ard Fheis.[2]
After the split in the republican movement at the onset of the Troubles in 1969–1970, the leadership of Clann na hÉireann sided with Official Sinn Féin and the Official IRA.[3]
The Clann published a monthly newspaper called Rosc Catha (Irish for "battle-cry"), starting in October 1972. They also organised CRAIC, a Birmingham Irish festival week which ran throughout the 1970s and 1980s. One of the CRAIC festivals brought the Irish poet, Seamus Heaney, over for a reading.
The BBC documentary, Birmingham Irish I am, which aired in February 2020, details part of the history and activities of Clann, and interviews two main members, Seamus Collins and Padraig Yeats.