Just started so am not allowed PMs yet. I think the connection is this:-
My father was Robert, b. 1923, son of Archibald, b. 1882, son of Richard
b 1850, who is a brother of your George b. 1858, Archibald b 1848, John
b 1853, David b 1863 and who were all sons of Richard b.1814 who married Mary Ann Hay in 1841and that is as far as I had got until I saw your post re Archibald b. 1790 and Agnes Aitken.
I did not know my grandfather as he died in 1949 before I was born. Yes, I would love to get any information you may have thanks. I have not looked into the Cowie side of my family too much, concentrated more on my mother's side up to now. I knew the hairdresser connection and my father too went there in his younger days for haircuts.