Ireland as an old woman seems to have been most often personified as Grace O'Malley. There is a least one old thread here and some songs on Granuaile in the DT. However, spelling is so variable it would take a long time to dig these out. See early copies of the tune and some songs to it on my website, and search on the Bodley Ballads website for 'Granua' for several Irish ballads having 'sons of Granua' or similar in the first line.