John Daly was born in Limerick city on 18 October 1845. His father worked in James Harvey & Son’s Timber Yard. At 16 John joined his father working as a lath splitter. At 18 he was sworn in as a member of the Irish Republican Brotherhood, and became fully involved in Republican activities. When he was refused absolution in confession because he admitted to being a Fenian, he decided that from then on his loyalty would no longer be to “faith and Fatherland” but to “God and Fatherland.”

On the 22 November 1866 Daly and his brother Edward were arrested at their family home having been betrayed by an informer, for running a munitions factory in the Pennywell district close to their home. He was released on bail in February 1867 toughened and more dedicated by the experience.

On the 5 March 1867 the ill prepared Fenian Rising took place. John Daly took charge of the Limerick detachment of the IRB. Limerick was one of the few areas were the Fenians were able to make some show of force, however weak. Through lack of numbers they failed to make a significant impact on the vastly superior forces arrayed against them. Moving out of the city, Daly moved his men into the country and joined up with other Fenians in an attack on the Irish Constabulary barracks at Kilmallock. The attack was repelled and Daly dispersed his men.

After this Daly had to flee the country by stowing away first on a boat the Hollywood, to England, and from London then on board the Cornelius Grenfel to the United States of America.

Life in America for working class immigrants was particularly tough and his first job on leaving the ship was digging a cellar. He then obtained work in a white lead factory and worked for a while as a mason’s help before getting a reasonably good job as a brakeman on a tram system. Daly was to recall these experiences in his “Recollections of Fenians and Fenianism.”

In 1869 Daly returned to Ireland and took up his old job in the timber yard, and also his Republican activities. He began to help reorganise the IRB and took part in a number of agitations to keep the IRB agenda in the public view. He became a leading voice in the Amnesty Association to help in the release of those Fenians still in Jail.

In November 1869 a major tenant’s right meeting took place in the city. The IRB objected to the meeting because the issue of the prisoners was not on the agenda. In what came to be known as “The Battle of the Markets” the IRB charged the platform and succeeded in dismantling it. Though the organisers of the meeting attempted to hold some form of gathering, Daly and the IRB refused to relent. It was Daly’s opinion that “it was one of the greatest moral victories ever achieved.” The issue of the political prisoners was to keep Daly occupied for much of the 1870s. In 1876 Daly was again arrested for disturbing another home rule gathering, though on being brought before the court he was acquitted.

During the Land War Daly was a member of the Supreme Council of the IRB and became organiser for Connacht and Ulster.

Daly had been asked by the Supreme Council to deliver the graveside oration at the funeral of Charles J. Kickham while in the states.In the summer of 1883, E.G. Jenkinson, head of Special Branch, was informed that John Daly was on his way to Britain from America. When he arrived, a plain-clothes detective was assigned to follow him at all times. As a result of this, Special Branch were alerted to the importance of John Torley in Glasgow, Robert Johnston in Belfast and Mark Ryan in London of the IRB.

While in England, Daly settled in Birmingham, in the home of an old friend from Limerick James Egan a generally inactive IRB man. Jenkinson was fully committed to using agent provocateurs in his attempts to convict Republicans. One such recruit was a publican and local IRB man named Dan O’Neill. Both Jenkinson and a Major Nicholas Gosselin persuaded O'Neill to betray Daly. O'Neill then ask Daly to deliver sealed cases to some associtas in London, and on the 11 April Daly was arrested as he was about to board the train for London, and explosives were found in the case he was carrying. The police then raided the home of James Eagan where explosives were "allegedly found buried" in Egan's garden in addition to some documents.

In prison he became friends with Thomas J. Clarke. While in prison he claim that he was being poisoned which caused an investigated by a commission of inquiry, 1886; it was admitted by prison officials as an error by a warder.

The head of the Birmingham police later made a deathbed confession that Daly had been “convicted on perjured evidence.”

Daly was unopposed elected as a Member of Parliament (MP) for Limerick City at the general election in July 1895, as a member of the Parnellite Irish National League. However, he was disqualified on 19 August 1895 as a treason-felon. In August 1896, he went on a lecture tour of England with Maud Gonne and in 1897 on a tour of American which was organised by John Devoy. He later founded a prosperous bakery business in Limerick, and went on to become Lord Mayor of his native city.

John Daly was elected three times as mayor of Limerick City, from 1899...1901. He jointly financed with Dr Patrick McCartan the IRB newspaper Irish Freedom in 1910.