There is a whole chapter on songs about Daniel O'Connell,songs both in English and in Irish languages, in Ríonach Uí Ógáin. "An Rí Gan Choróin - Dónall Ó Conaill sa Bhéaloideas" (The King Without a Crown - Daniel O'Connell in Folklore). Baile Átha Cliath [Dublin]; An Clóchomhar, 1984
The babies by steam song is included, a bit different I think from the way I have it. I just borrowed this book from the library today - I hope I can back to you with a little more info on the song's origins.