Dirk Rijnhard Johan Mackay (1876-1960) (1876–1960) Parents Juliana Anna van Lynden Theodoor Philip Mackay Children Johan Jacob Mackay Eric Rynhard Alexander Mackay Patricia Mackay Baron Johan Hugo Mackay Anna Maria Mackay Helene Gérardine Mackay Siblings Johan Jacob Mackay Daniël Mackay Maria Jacoba Mackay Æneas Mackay Margaretha Clara Françoise Mackay Edward Mackay Constantijn Willem Ferdinand Mackay Norman Mackay Partners Johanna Elisabeth Blaauw Helena Esmé Egerts Violet Egerts