unknown daughter de Fiennes1
Her married name became Hampden.1
Child of unknown daughter de Fiennes and Batholomew Hampden
- Reginald Hampden+1 d. b 1220
- [S8569] Ranulph Fiennes, Agincourt, My family, the battle and the fight for France (London: Hodder & Stoughton, 2014). Hereinafter cited as Agincourt.
Batholomew Hampden1
Child of Batholomew Hampden and unknown daughter de Fiennes
- Reginald Hampden+1 d. b 1220
- [S8569] Ranulph Fiennes, Agincourt, My family, the battle and the fight for France (London: Hodder & Stoughton, 2014). Hereinafter cited as Agincourt.
Reginald Hampden1 
Child of Reginald Hampden and Agnes Burton
- Alexander Hampden+1 d. b 1303
- [S8569] Ranulph Fiennes, Agincourt, My family, the battle and the fight for France (London: Hodder & Stoughton, 2014). Hereinafter cited as Agincourt.
Agnes Burton1
Her married name became Hampden.1
Child of Agnes Burton and Reginald Hampden
- Alexander Hampden+1 d. b 1303
- [S8569] Ranulph Fiennes, Agincourt, My family, the battle and the fight for France (London: Hodder & Stoughton, 2014). Hereinafter cited as Agincourt.
Alexander Hampden1 
Child of Alexander Hampden and Maryan Herdeby
- [S8569] Ranulph Fiennes, Agincourt, My family, the battle and the fight for France (London: Hodder & Stoughton, 2014). Hereinafter cited as Agincourt.
Maryan Herdeby1
Her married name became Hampden.1
Child of Maryan Herdeby and Alexander Hampden
- [S8569] Ranulph Fiennes, Agincourt, My family, the battle and the fight for France (London: Hodder & Stoughton, 2014). Hereinafter cited as Agincourt.
Mahaut de Fiennes, Dame de Heuchin1 
Child of Mahaut de Fiennes, Dame de Heuchin and Baudouin III de Guînes, Comte de Guînes
- Arnould III de Guînes, Comte de Guînes+1 b. 1225, d. 1285
- [S8569] Ranulph Fiennes, Agincourt, My family, the battle and the fight for France (London: Hodder & Stoughton, 2014). Hereinafter cited as Agincourt.
Baudouin III de Guînes, Comte de Guînes1 
Child of Baudouin III de Guînes, Comte de Guînes and Mahaut de Fiennes, Dame de Heuchin
- Arnould III de Guînes, Comte de Guînes+1 b. 1225, d. 1285
- [S8569] Ranulph Fiennes, Agincourt, My family, the battle and the fight for France (London: Hodder & Stoughton, 2014). Hereinafter cited as Agincourt.
Alix Marie de Coucy, Dame de Coucy1 
Children of Alix Marie de Coucy, Dame de Coucy and Arnould III de Guînes, Comte de Guînes
- Margaret de Guînes+1 d. 1304
- Baudouin, comte de Guînes seigneur d’Ardres et de Bourbourg+1 d. 1294
- Enguerrand V de Guînes, Seigneur de Coucy+1 b. 1255, d. 1321
- [S8569] Ranulph Fiennes, Agincourt, My family, the battle and the fight for France (London: Hodder & Stoughton, 2014). Hereinafter cited as Agincourt.
Jeanne Catherine de Montmorency1 
Child of Jeanne Catherine de Montmorency and Baudouin, comte de Guînes seigneur d’Ardres et de Bourbourg
- Jeanne de Guînes+1 d. 1331
