grizel johnston is my great, great, great, great aunt. Her brother Adam Johnston married Alison Ross. Their daughter Elizabeth married archibald pow horne. Their daughter Elizabeth married William Fraser. Their Daughter Elizabeth married William Gray. Their daughter Agnes (not Elizabeth this time, its her twin sister) married George Patullo Hogg Aitken, my Father. I hope this gives you some detail you needed.
Lesley Wylie (m.s. Aitken)