Sir William Hay of Lochorwart and Yester Peerage person ID=108220 (1375–1421) Parents Jean Gifford Sir Thomas Haya of Lochorwart Children Margaret Hay Sir David Hay of Lochorwart and Yester Alice Hay Edmund Hay of Tala Janet Hay Elizabeth Hay Sir Thomas Hay of Lochorwart and Yester Partners Alice de la Haye