"Fields of Athenry"

Copyright note: "The Fields of Athenry" was written in the 1970s by Pete St. John. A claim was made in 1996 that a broadsheet ballad published in the 1880s had similar words; however folklorist and researcher John Moulden found no basis to this claim, and Pete St. John has stated definitively that he wrote the words as well as the music.

From wikipedia;

"The Fields of Athenry" is an Irish folk ballad set during the Great Irish Famine (1845-1850) about a fictional man from near Athenry in County Galway who has been sentenced to transportation to Botany Bay, Australia, for stealing food for his starving family.

...and also;

The convict says his crime is that he "stole Trevelyan's corn"; a reference to Charles Edward Trevelyan, a senior British civil servant in the administration of the Lord Lieutenant of Ireland in Dublin Castle. Some suggest that corn refers to "Indian corn" (maize) imported from America by the government for famine relief, but European use of the word "corn" used to refer to any widely grown grain - barley, oats, wheat, etc. The song is sometimes considered a "rebel song". Supporters of Irish republicanism sometimes chant additional lyrics during the chorus; shown in italics in the following: "Where once we watched the small free birds fly - oh baby, let the free birds fly / Our love was on the wing - Sinn Féin / We had dreams and songs to sing - IRA or Fuck the Queen / It's so lonely round the Fields of Athenry." When used by Celtic fans, this has led to charges of sectarianism.

Note that I found no references in the usual celtic music sites, because the song is not "Trad."