Hi
Perhaps this is off little use to you but see how it goes. I have come accross the name before during my own research and have two Galbrath's in University College Cork in 1914. I would guess that they are some relation because the name is rare in Cork. At the moment I have not completed the list of UCC men in WW1 but I can tell you that one was a Capt in the Royal Army Medical Corps, this would suggest that he studied medicine, while the other was a Lieut. I do not have first names or an address for these men but this information is in the archives at the College. I will, over the next few months, complete this list and hopefully (if you are interested) have a name and address of these men. Incidently both returned from the war.
I hope this has been of some help.
Kind Regards,
Mitch