William De Ferrers
- 1254(
= Descendancy chart to this point, 
= Expand, 
= Collapse)
- 1 William De Ferrers [1] d. 1254
- Sibyl Marshal
- 2 Agnes De Ferrers [1.1]
- Robert De Muscegros b. 1252 d. 1280
- 3 Hawise Muscegros [1.1.1] b. 1276 d. 1340
- John De Bures b. 1276 d. 1359
- 4 Catherine De Bures [1.1.1.1]
[ =>]
- 4 Catherine De Bures [1.1.1.1]
- 3 Hawise Muscegros [1.1.1]
- 2 Agnes De Ferrers [1.1]