Alexander Seton, 1st Earl of Huntly, had a son, likewise named Alexander, by his second marriage, about 18th January, 1426, with Lydia, daughter and heiress of Sir John Hay of Tullibody, in the County of Clackmannan.  Alexander Seton suceeded to his mother's estate and was the 1st Seton of Touch.  The Seton's of Touch were Baron's of Touch and Tullibody, and were Hereditary Armour Bearers to the King in Scotland from 1488 until 1920.