Material relating to Tullamore Incident, March 1916 and the 1916 Rising from the family of Séamus O'Brennan and his brother Alo O' Brennan. Contains postcards, photographs, contemporary newspapers (1916-1917), memoirs, and commemorative newspapers (1966).
List of the names of men of No. 1 Offaly Brigade Battalion Company 1916-1923. Annotated 'Copy reference'. Also includes mss copy of letter 'with compliments from Commdt. Barty Byrne IRB Control'. Letter is from Joe Byrne, Adj. 3rd Batt. to siblings on 26 January 1923, shortly before his execution. 'Let none be injured for my death, it is not my wishes.'