Hi...Charles...
I'm sorry to be so vague..But I had to back track to find it again 'cause I was in so many of the web pages that I got lost!!!
(Here it is...Go to Alta Vista or Yahoo or the like and....call up...)
Ancestry.com
(then go to...)
Ancestry World Tree
then type in who you want to find...husband and wife is the best. It's a pedigree file submitted by everybody, so some of the info may be off. What they have on the Cathcart's doesn't go beyond James and Margaret Clark.

Hope this helps..happy hunting!!!
terri...