'     David I
of Scotland
c1084
married Maud
of Huntingdon
   
            Henry
1114
3rd Earl of Huntingdon    
married Ada de Warenne
    David
c1150
married Matilda
of Chester
      Marjorie
of Huntingdon
married Gille Crist
    Isobella
of Huntingdon
married
Robert de Bruce
      William Gilbert Irvine
c1175