This may be very out of date, but there certainly was a marriage between Helen Baillie Inglis (born Inverness 16 July 1799, daughter of George Inglis and Helen Alves) and George Hepburn. Details of the marriage settlement are, or should be, in the Inverness museum, among the papers of Helen's father, George Inglis, latterly of Kingsmills, a Demerara planter, and former partner in St Vincent of two of the Alves brothers from Inverness and the financier George Baillie). I have also see a New Zealand posting suggesting it was a runaway marriage - she was certainly very young. You probably have all this by now, but just in case......