I received this by e-mail. Can anybody help??

I am looking for the lyrics/tune to a song that starts "Sean my boy is going away" or something like that. It may continue "but I fear he'll sleep in a strangers ?? in a land beyond the bog"

Sorry for the sketchy words but this song is partially known to my mother-in-law and we need to find it URGENTLY before the funeral of her son Sean, my brother in law, on Wednesday in England. If anyone can help it would be very much appreciated.

We have spent hours scouring the internet to no avail.

Thanks in advance for any help anyone can come up with.