John,
Curious to know whether there's any relationship between these names and Kaighin:
KEGEEN
KEGG
KEIG
KEIGEEN
I haven't done any research into any of these names and don't know if there are any still alive. I also note that you don't have Kegeen and Keigeen on your scorecard, but these names were extant in A.W. Moore's time.
Thanks,
Greg