To be honest, I originally found the 1830 marriage from working backwards. My g.g. grandfather is John Stewart (A & E's son). On his marriage cert. (under the Stuart spelling) his parents are given as Elspet Grant and Alexander Stuart. Also on other documents. I have always had to presume that Al. was short for Alexander in this instance. My belated apologies for not thanking you for the census information by the way. While I am working I have to do my research checking on my breaks so things get a bit erratic. I am sometimes half way through doing things when I have to stop.
Regards
Doddie