| 3rd Lord of Clun and Oswestry John Fitzalan | |
| B: | 1200 |
| Arundel, Sussex, England | |
| D: | Mar 1240 |
| Clun, Shropshire, England | |
 | Isabel d'Aubigny Abt 1196-Bef 1240 |
| Isabel d'Aubigny | |
| B: | Abt 1196 |
| Arundel Castle, Arundel, Sussex, England | |
| M: | 1222 |
| Arundel, Sussex, England | |
| D: | Bef 1240 |
| Arundel Castle, Arundel, Sussex, England | |
| 2nd Lord of Oswestry and Clun William FitzAlan | |
| D: | 1216 |
| 1st Lord of Oswestry and Clun William FitzAlan | |
| B: | 1162 |
| Arundel Castle, Arundel, Sussex, England | |
| D: | 1210 |
| Isabella de Say 1132-Abt 1199 |
| Isabella de Say | |
| B: | 1132 |
| Clun, Shropshire, England | |
| D: | Abt 1199 |
| Oswestry, Shropshire, England | |
| Marcher Lord William FitzAlan Abt 1105-Abt 1160 |
| Marcher Lord William FitzAlan | |
| B: | Abt 1105 |
| Oswestry, Shropshire, England | |
| D: | Abt 03 Apr 1160 |
| Oswestry, Shropshire, England | |
