 Alexander Home's father, Sir Alexander Home of that Ilk, & feudal baron of Dunglass, was killed at the battle of Verneuil on 17 August 1424, and Alexander Jr., was retoured his heir that year, indicating he was already of age.His mother was Jean, daughter of Sir William Hay of Locherworth, Midlothian.In April 1425 he made an agreement with his uncle David Home of Wedderburn, to halve the profits of the bailiary of Coldingham whichever of them should acquire it by purchase orotherwise, and is therein designed Alexander of Home of that Ilk.