"Dad lets me read his favourite book, John Mitchel's Jail Journal."
John Mitchel
Public DomainJohn Mitchel

In 1847, John Mitchel launched the "United Irishman", the newspaper of the militant Young Ireland Movement.  He was charged with treason and sentenced to 14 years and transportation to Van Diemen's land (Tasmania).  After his escape to New York, where he edited the "Citizen", he made many Roman Catholic enemies because of his criticism of the temporal power of the pope.  His "Jail Journal" was published in 1854.



Further Reading:

Young Ireland in Exile by J.H. Cullen

Irish Exiles in Australia by T.J. Kiernan