A British conscript turned infamous convict, Michael Harrington is perhaps best known for orchestrating one of the most daring escapes from Australia. In 1876, Harrington, along with six others, braved a massive typhoon in nothing more than a tiny rowboat to board an American whaling ship in what is now remembered as the "Catalpa Rescue."

Cornelius Dwyer Kane (aka Keane) (1839-1891) had been a law clerk and cener from Skibbereen, County Cork, Ireland. Transported aboard the Hougoumont, Kane was conditionally pardoned in 1871, but was forbidden from returning to Ireland, so he never reunited with his wife and children there. He did, however, settle in Queensland and became a civil servant.

Moore, a blacksmith was probably from Dublin. He was a Fenian but not a member of the British army. He was arrested in 1865 and later transported to Western Australia aboard the Hougoumont. He was pardoned, along with other political prisoners in 1869. Moore arrived by ship at San Francisco in January 1870, along with Denis Cashman, one of JB O'Reilly's best friends.

Delaney was from Laois, Ireland. He joined the British army and also the Fenians. Arrested in Dublin in 1866 and later transported to Western Australia aboard the Hougoumont. Delaney was not included in the Catalpa escape since he had been sentenced to hard labour in 1875 and was under constant guard by the prison authorities. After his subsequent conditional pardon and release, Delaney emigrated to the USA in the 1880s.