I don't find an Alexander Paterson that matches your criteria; however, looking up the extracted parish records in familysearch.com I did find a likely candidate for his wife. jean Ross was b 25 Apr 1815 and christened 5 days later in Dollar, Clackmannan, the daughter of John Ross & Christian Hutcheson. she had an elder sister Isabel chr 22 Nov 1812, a younger sister Catherine chr 30 Apr 1815 & one brother Hugh chr 1 Mar 1818, all in that same parish. John Ross md 9 Feb 1810 in this same parish to Christian Hutchison. Good luck!