Mary Lyon Dennistoun (died 1872) (1793–1872) Parents James Dennistoun Margaret Dreghorn Children Thomas Baillie Alexander Hope Baillie Sir William Baillie, 2nd Baronet John Hope Baillie George Augustus Frederick Baillie Robert Baillie James Dennistoun Baillie Siblings Elizabeth Dreghorn Dennistoun Partners Sir William Baillie of Polkemmet, 1st Bt.