Sibyl Marshal
( = Descendancy chart to this point, = Expand, = Collapse)
- 1 Sibyl Marshal
- William de Ferrers, 5th Earl of Derby b. Abt 1193 d. 28 Mar 1254
- 2 Maud Ferrers
- 2 Agnes Ferrers
- 2 Sibyl de Ferrers
- 2 Joan de Ferrers
- 2 Eleanor Ferrers
- + Roger de Quency, 2nd Earl of Winchester b. Abt 1195 d. 25 Apr 1264
- + Roger de Quency, 2nd Earl of Winchester b. Abt 1195 d. 25 Apr 1264
- 2 Agnes de Ferrers
- 2 Isabel Ferrers
- 2 Agatha Ferrers
- William de Ferrers, 5th Earl of Derby b. Abt 1193 d. 28 Mar 1254