[a][1] When King Robert III of Scotland sent his only remaining son, the future king James I of Scotland to France for safety, the ship was taken by English pirates and Prince James, along with his companions, was taken prisoner and turned over to Henry IV of England.
[3] On 7 March 1408 Alexander's father, Sir William Seton, purchased the wardship of Elizabeth Gordon, Heiress of Gordon from Walter de Haliburton of Dirleton for a liferent of 50 merks from the barony of Tranent.
[3] Sir William originally betrothed her to his eldest son Sir John Seton but when John declined, Elizabeth was then betrothed to William's younger son, Alexander Seton, who by this time had been released by the English.
[5] In that same year Alexander and Elizabeth were granted a charter for half the lands of Culclarochy and part of Gerry in the barony of Drumblade.
[5] In 1428 Alexander and Elizabeth were granted a dispensation from the pope long after their marriage when it was determined they were within the forbidden degrees of consanguinity; the dispensation stating that Alexander Seton had contracted marriage with Elizabeth, the heiress of Gordon, "per verba de presenti publici, juxta morem patriae" (Latin: publicly in accordance with all customs of the time).