Thanks very much for your reply.
In one sense I'm pleased to hear your feedback, because I was hoping for Irish ancestry! But loss of any evidence during their relocation is disappointing!
I tried clicking on your link: www.manxnotebook.com/families/greggor.htm
but all it does is redirects me to the home page of isleofman.com - can you please advise what I should do?
Thanks.
Any other help from anyone about what I can - or should - do next would be appreciated.
Best wishes