Alexander De Seton
Alexander was born in 1152 in Seton, East Lothian, Scotland.  He died at the age of 59 in 1211.

 Margaret De Barclay
Margaret was born about 1172 in Gartley, Banffshire, Scotland.

 Adam De Seton
Adam was born in 1190 in Seton, East Lothian, Scotland.  He died at the age of 59 in 1249 in Seton, East Lothian, Scotland.