James Clarence Mangan, born James Mangan was an Irish poet.
Mangan was the son of a former hedge school teacher who took over a grocery business and eventually became bankrupt.
Born in Dublin, he was educated at a Jesuit school where he learned the rudiments of Latin, Spanish, French, and Italian. He attended three different schools until the age of fifteen. Obliged to find a job in order to support his family, he became a lawyer's clerk, and was later an employee of the Ordnance Survey and an assistant in the Library of Trinity College, Dublin.