I also am a descandent from Andrew Armour who married an Elizabeth Small on 23rd June 1760 in Kilmarnock, Scotland.
Their son James Armour (married Janet Raeburn), one of their children was Elizabeth Armour b. 1 July 1798 in Kilmarnock, d. 2 Jan 1872 married a John Armour on 26 Nov 1816 (b. 24 Aug 1794 and d. 11 Jul 1858).They had a child called Helen Armour who is my gggg grandmother.
If you think this is the same line then let me know.