Complete Peerage of England Scotland Ireland Great Britain and the United Kingdom, by G. E Cokayne,  Sutton Publishing Ltd, 2000 @ VII:667-70

(Ref: VII:667-70) This citation is considered to be direct and primary evidence used, or by dominance of the evidence.
Complete Peerage of England Scotland Ireland Great Britain and the United Kingdom, by G. E Cokayne,  Sutton Publishing Ltd, 2000. 

• References (2)
  • Parent Source: Complete Peerage of England Scotland Ireland Great Britain and the United Kingdom, by G. E Cokayne,  Sutton Publishing Ltd, 2000
  • Individual: Ekbert Ambergau