In Dunbar cemetery, there is a stone dedicated to a Thomas Aitchison and his Family. The Stone reads thus.
Thomas Aitchison, Surgeon at Dunbar died 25th May 1849 aged 51 Wife Margaret Watson died 29th November 1847 age 49 Robert Aitchison Leutenant 49th Madras Regiment died Seonie 6th November 1848 age 25 John Gray Aitchison died 20th April 1854 aged 18
i have other Aitchisons listedfrom Dunbar Cemetery. Perhaps they are also relatives of yours? E-Mail me and i will send them too you if you wish.