I'm not sure, George. I saw your request at Gaelic-B so I looked in the Gaelic Resouce Database and found information on a couple of songs. There is also Eilean mo Chridhe:"Mo chridhe fo leòn, ochoin nach fhaod mi bhith ann ..."
and the database gives reference to "MO CHRIDHE FO LEON, OCHOIN, NACH MI BHA LEAT THALL" by Domhnall Iain Mac Dhomhnaill of S Uist published in "Chì Mi - The Gaelic Poetry of Donald John MacDonald", Edinburgh: Birlinn, 1998. Note that this is the author of the song Aodh has given us, but he hasn't given us the verse with the lines "Mo chridhe fo leòn".
thanks Jeff for you help with the linkages.