IRA Membership Series

IRA Nominal Rolls (Ref Code: RO/1-611)

There are around 600 files in the Battalion and Company Rolls series. The Battalion and Company nominal rolls (RO) is the title assigned by the Referee and Advisory Committee to the file series dealing with the membership of the Irish Volunteers/IRA, Cumann na mBan and Na Fianna Éireann. The series gives details of the membership/strength of these organisations as of 11 July 1921 and as of 1 July 1922 and comprise a total of 49,982 individual documents.

In the case of the IRA the membership of Brigades, Battalions and Companies and of Flying Columns/Active Service Units and other specialist formations at Battalion and Brigade Headquarters were sought as well as the officer membership at Divisional and General Headquarters (GHQ) level.

The RO series thus includes the membership of the 16 Divisions of the IRA, constituting a total of 87 Brigades, including the Scottish Brigade (technically termed a Division as a 2nd Scottish Brigade was to be formed from 1 July 1922). In addition, two files dealing with the appointment of the Chief of Staff, General staff officers, the commanders of the Directorates and the exercise of command by GHQ from 1919 are included. (RO601 and 601A).

The majority of the files in this sub series were gathered in 1935. The details of the organisation, structure and membership rolls for Cumann na mBan and Na Fianna Éireann were gathered at the same time and are included in the series.

IRA Divisions

Irish Divisions

Select a Division from the text list below.

1st Northern Division

1st Southern Division

2nd Northern Division

2nd Southern Division

3rd Northern Division

3rd Southern Division

4th Northern Division

1st Western Division

5th Northern Division

2nd Western Division

1st Eastern Division

3rd Western Division

2nd Eastern Division*

4th Western Division

3rd Eastern Division

1st Midlands Division

* 2nd Eastern Division also known as Dublin Brigade

Establishment of IRA

General HQ, IRA

Irish Volunteer Executive


Liverpool Battalion

New York Gun Running

London Battalion

Q Company GHQ

Manchester Battalion

Scottish Brigade

Newcastle-on-Tyne Battalion

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View individual member's pension applications