Granuale "the distress of Erin she sorely lamented." Irish men had fought for old England but England, in turn, "oppressed poor old Granuale." She hopes for help in "some strange nation" but mourns the loss of the green Linnet banished to St Helena
Granuaile is sometimes a standin for Ireland.
"Granuaile O'Malley (Or Grace O'Malley, or Grainne Ni Mhaille or Grainne Uaile) is among the most illustrious of O'Malley ancestors. She was a 'Sea Queen' and pirate in the 16th century." (Source: The Official Web Site of The O'Malley Clan Association)
Zimmermann p. 55: "At the time of the United Irishmen, Granu Waile standing for Ireland was already celebrated by broadsides in English."
For another example of Napoleon as the Green Linnet see "The Green Linnet" - BS