"Tom Kent executed for something he did not do"

The Treason Act 1351 is an Act of the Parliament of England which codified and curtailed the common law offence of treason. No new offences were created by the statute.[3] It is one of the earliest English statutes still in force, although it has been very significantly amended.[4][5] It was extended to Ireland in 1495[6] and to Scotland in 1708.[7] The Act was passed at Westminster in the Hilary term of 1351, in the 25th year of the reign of Edward III and was entitled "A Declaration which Offences shall be adjudged Treason". - Source - Treason Act 1351

Extract from the above:

A person was guilty of high treason under the Act if they:

"compassed or imagined" (i.e. planned; the original Norman French was "fait compasser ou ymaginer") the death of the King, his wife or his eldest son and heir (following the coming into force of the Succession to the Crown Act 2013 on 26 March 2015,[10] this has effect as if the reference were to the eldest child and heir);

violated the King's companion, the King's eldest daughter if she was unmarried or the wife of the King's eldest son and heir (following the coming into force of the Succession to the Crown Act 2013, this has effect as if the reference were to the eldest son only if he is also the heir[11]);

levied war against the King in his Realm;

adhered to the King's enemies in his Realm, giving them aid and comfort in his Realm or elsewhere;

counterfeited the Great Seal or the Privy Seal (repealed and re-enacted in the Forgery Act 1830; death penalty abolished in 1832;[12] reduced to felony in 1861[13] (except in Scotland[14]));

counterfeited English coinage or imported counterfeit English coinage (reduced to felony in 1832[15]);

killed the Chancellor, Treasurer (this office is now in commission), one of the King's Justices (either of the King's Bench or the Common Pleas), a Justice in Eyre, an Assize judge, and "all other Justices", while they are performing their offices. (This did not include the barons of the Exchequer.[16])

In firing on the Police and the army and initiating the gun-battle that took place in Cork on the 2nd May 1916, with the country under Martial Law, Thomas Kent was guilty of levying war against the King in his Realm.