"Roddy McCorley was a Presbyterian from Duneane. He took part in the Battle of Antrim and went into hiding after it. After a year in hiding he was betrayed, tried in Ballymena and hanged in Toome on Good Friday 1799. There is another song on the same subject, written by Ethna Carbery in the 1890s. This song is an older ballad, probably composed in or soon after 1799."

Liam, that's what I have found in a search on the web (not much, I'd like to know more, too). Both songs are in the DT, the older one spells Rody.