Sources |
- [S25458533593] Complete Peerage, G E Cockayne et al, (St. Catherine Press, 29 Great Queen St, Kingsway, London 1910 on), Derby art, Vol IV, pp.191-2.
- [S25458533641] II: Domesday Descendants, K S B Keats-Rohan, (Boydell Press, 2002), Willelm II Peverel de Nottingeham, p. 1069.
- [S25458533593] Complete Peerage, G E Cockayne et al, (St. Catherine Press, 29 Great Queen St, Kingsway, London 1910 on), Peverel of Nottingham, Vol IV, Appx I, pp. 761-771.
- [S25458533611] I: Domesday People, K S B Keats-Rohan, (Boydell Press, 1999), Father, Willelm Peurel de Nottingeham, p. 494.
- [S25458533684] Tim Powys-Lybbe.
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