JJ Callanan also translated The Outlaw of Loch Lene. Kathleen Hoagland's "1000 Years of Irish Poetry" includes five poetic translations by Callanan and this biographical information:
""Callanan, James Joseph (Jeremiah) - was born in Cork, May 1795; died in Lisbon, Portugal, September 19, 1829. His parents wished him to become a priest and he entered Maynooth at the age of 17; but after two years left and entered Trinity College, Dublin, to study medicine. At Trinity he won two prizes for poetry. Leaving Trinity, he enlisted an after buying a release, gained a scant livelihood by teaching. Later, Callanan wandered through Ireland, gathering its legends and poetry. He died of tuberculosis in Portugal where he had gone as a tutor. His poetry was published in Cork in 1861. He was the first to give adequate versions of Irish Gaelic poems, and also among the first to introduce a Gaelic refrain into English poetry."

I find the last comment about Gaelic refrains in English poetry and would be interested in seeing some documentation; if anybody has any information on the topic, maybe they could start an appropriate discussion thread.