In checking later messages I realized where you are. Graham, you may know Vera Porterfield McBride. She is an ancestor of mine and has visited my family here in Texas many times. What a wonderful lady. She can share info with you about the Porterfields. Surely you are related. She has lived in E. Kilbride all of her life I believe. My grandparents have a wonderful rendition of the Porterfield crest. I will be glad to get you a copy duplicated if you would like me to mail it to you.