Hi George, I too am tracing my Cormack family. My mother's maiden name was Edith Hutchinson CORMACK and her father was GEORGE CORMACK - b. 1875 in Peterhead, Scotland, m. 1898 Mary Drysdale Ferguson. His father was GEORGE CORMACK b. 1828 in Peterhead, m. 1866 Isabella or Elizabella Christian. His father was GEORGE CORMACK b. 1801 in Whinnyfold, ABD, Scotland, m. 1825 Helen Mitchell. His father was GEORGE CORMACK b. abt. 1779, m. 1799 Isabella Coutts. And here I have hit a brick wall.I have more info on all these people (children,etc.), and if you think it worthwhile, I will be happy to share with you. The last George (b. abt. 1779) did name his second son John so perhaps George's father (also George?) had a sibling named John.That would be around the time you are looking for. Contact me and we can discuss.