Isabel (Baroness of Clun) De Saye
- 1199(
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- 1 Isabel (Baroness of Clun) De Saye [1] d. 1199
- William (Baron of Oswestry) Fitzalan b. 1090 d. 1160
- 2 William (Baron of Oswestry) Fitzalan [1.1] b. 1155 d. 1216
- Agnes De Lacy d. Yes, date unknown
- 3 William Fitzalan [1.1.1] d. 1213
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- 4 William Fitzalan [1.1.1.1] d. 1216
- 4 William Fitzalan [1.1.1.1]
- 3 John (Lord of Clune & Oswestry) Fitzalan [1.1.2] d. 1239
- Isabel D'aubigny d. Yes, date unknown
- 4 John (5th Earl of Arundel) Fitzalan [1.1.2.1] d. 1267
[ =>]
- 4 John (5th Earl of Arundel) Fitzalan [1.1.2.1]
- 3 Walter (1st Steward of Scotland) Fitzalan [1.1.3] d. 1177
- + Eschina (De Molle) De Londonius d. Yes, date unknown
- + Eschina (De Molle) De Londonius d. Yes, date unknown
- 3 William Fitzalan [1.1.1]
- 2 William (Baron of Oswestry) Fitzalan [1.1]
- + Geoffrey (Lord Clun) De Vere d. Yes, date unknown
- William De Botreaux d. Abt 1220
- 2 Reynold (of Botreaux Castle) De Botreaux [1.2] d. 1273
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- 3 William De Botreaux [1.2.1] d. 1302
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- 4 William De Botreaux [1.2.1.1] d. 1342
[ =>]
- 4 William De Botreaux [1.2.1.1]
- 3 William De Botreaux [1.2.1]
- 2 Reynold (of Botreaux Castle) De Botreaux [1.2]