There appears to be a number of Corkill sons from the 1881 census from my great great Uncle john. my guess is that there are descendants of them still remaining on Man. It would be great to see if I could find one or more of them to see if they could shed some light into the 1700's. Thanks for the info on the Universe from Liverpool.Based on the census I have seen It looks like up to 1881 anyways, Robert was the only Corkill in my family to emigrate.