this song is in the Mudcat Digital Tradition database -
It's a shame that the lyrics on this thread are missing vowels which have diacritical marks

I've just looked at an article which queries the attribution of Dean Cadalan Samhach to Iain MacMhurchaidh aka John MacRae, who emigrated from Kintail around the time of the American Revolution. https://www.academia.edu/12954975/Unsettling_Iain_mac_Mhurchaidh_s_slumber_The_Carolina_Lullaby_authorship_and_the_influence_of_print_media_on_Gaelic_oral_tradition