Hawise Alicia de Hay

1410-1431 Sir William Hay Married Alice Hay, daughter of Gilbert Hay, first Earl of Errol, by whom he had 10 children: Thomas and David, who both succeeded; Edmund, first Laird of Linplum and Talaw; Andrew a churchman; Nicolas, a pretender of Bathoms; Henry, of whom there is no information; a son, baird of Bara, name unknown; Alice, married to William Earl of Errol; Margaret, married to a son of William Earl of Angus; Martha, who married Richard Morhead of Lachope, Secretary of State of Scotland.

Source: http://haygenealogy.com/hay/wph-hay/hayhistory.html