Baroness Maria Johanna Bertha Christina van Dedem (died 1932) (d. 1932) Parents Christina Catharina Roessingh Udink Alexander van Dedem Children Eric John William Theodoor Mackay Alexander Willem Rynhard Mackay Aeneas Mackay, 13th Lord Reay Maria Christina Elizabeth Mackay Siblings Christina Bernardine Johanna van Heerdt Partners Eric Mackay, 12th Lord Reay