1916 – 1921 Club He was a founder member of the
1916–1921 Club, that sought to bring together the two sides of the civil war, and its first Honorary Secretary until his death in 1953.
Membership of Crokes Gaelic Club Gay was a member of Crokes Gaelic Club. The club was a recruiting ground for the Irish Volunteers. It is stated by Sean O'Duffy, also a Crokes member, that no fewer than 32 of the club's members were involved in 1916. Gay chaired a Special General Meeting of the club on 21 October 1916 at which the death during the Insurrection of two Club members was marked. They were Sean Owens and Philip Whelan. The meeting also noted the detention by the British Government of other Club members – Tomas Ua Ceallagh, D. O'Callaghan, Sean O'Brien, Gerald Fitzmaurice, E. Dennany, P. Mc Loughlin, Sean Farrer and others. Arrangements were made to send parcels of provisions to prisoners in Frongach, Wales.
Sean O'Dubhthaigh spoke about the objectives of the Club which were non-political and nonsectarian. Club records show that Gay played hurling for both the Junior and Senior teams in 1905. He was on the team that won the Middle Hurling League and for which he was awarded a gold medal. He held the office of President in 1910, 1911, 1912, 1916 and 1917. At the time, as well as its main purpose of hurling and football, the club organised activities for members, including a Sunday night social, Tuesday night Irish classes, ceilís and lectures. Records show that Frank Sheehy Skeffington and Major Sean Mc Bride addressed the Club in 1912. before securing appointment as an Assistant Librarian with the City Corporation in September 1900. His starting pay was 12/- a week. In 1915, he was promoted to Head Librarian in Capel Street. He joined the
Free State Army in 1922 and served as Staff Captain and then Colonel, retiring, on demobilisation of war time strength, on 20 December 1923. He then returned to the Library Service. == Personal details ==