Helen Mackay (died 1869) (1794–1869) Parents Helen Mylne Æneas Mackay Children William Æneas Moncreiffe unknown daughter Moncreiffe unknown daughter Moncreiffe Sir Thomas Moncreiffe, 7th Baronet Partners George Bridgeman, 2nd Earl of Bradford Sir David Moncreiffe of that Ilk, 6th Bt.