son of the 1st Seier de Seton, de Lens, is known as Dougall, though his
christian name was Walter. He married Janet, daughter of Robert
de Quincy and had a
son called Seher (also called Dougall). Seher de Seton was
succeeded by his son Philip de Seton who made a strong alliance by marrying Helen, only daughter of Waltheof,
5th Earl of Dunbar and March. Alexander de Setoun
succeeded his father Philip, and married the
daughter of the Chamberlain to the King.