Charles Hamilton Teeling was an Irishpolitical activist, journalist, writer, and publisher from Lisburn, County Antrim, Ulster. He was the second son of Luke Teeling, a wealthy Catholic linen manufacturer in Lisburn At the age of 16 he joined his elder brother Bartholomew Teeling in the Society of United Irishmen, formed in 1791 by Protestant reformers in Belfast. In defiance of the AscendancyParliament in Dublin, and of the Dublin Castle Executive answerable to London, the Society sought "an equal representation of all the people" of Ireland in a "national government." With his brother-in-law John Magennis, the Teeling brothers helped connect the United Irishmen with the Defenders.. A vigilante response to Peep O'Day Boy raids upon Catholic homes in the mid 1780s, by the mid 1790s the Defenders, like the United Irishmen, developed into an extensive oath-bound fraternity. He was a witness, he later claimed, not a partisan in their confrontation with the Peep O'Day Boys in the Battle of the Diamond, 1795. His activities with the United Irishmen and Defenders led to his arrest on September 16th, 1796, for high treason. He was released on bail the following year, remaining free during and after the 1798 rebellion, in which he was to deny any involvement. He was arrested, and briefly held, again in the wake of Robert Emmet's abortive uprising in 1803, probably due to the involvement of his younger brother George. In 1802 Teeling edited a short-lived monthly, the Ulster Magazine, and then started or took over a weekly newspaper, the Northern Herald, edited partly by Thomas O'Hagan, the futureBaron O'Hagan, which survived somewhat longer. His memoirs of the politics of his youth appeared in three parts: Personal Narrative of the "Irish Rebellion" of 1798, his Sequel to Personal Narrative of the "Irish Rebellion" of 1798, and his History and Consequences of the Battle of the Diamond. Charles Hamilton Teeling was said to be ‘late of Belfast’ when he died on 14 August 1848.