I an looking for information about Alexander ROBERTSON b1792 Sleat d 1868 Australia son of Murdoch& Flora ROBERTSON of Sleat. He married Janet MCKENNAN b1800 d 1881 or 1887, daughter of Neil and Mary MCKENNAN. Alexander and Janet emigrated with daughter Margaret (Peggy)b 1827 to Sydney on the Henry Porcher arriving 21/2/1840. Julie Bowler, Canberra