_John FITZALAN III___+
| (1246 - 1271)
_Richard FITZALAN ___|
| (1266 - 1301) |
| |_Isabel DE MORTIMER _+
| (.... - 1292)
_Edmund FITZALAN ____|
| (1285 - 1326) |
| | _Thomas I DEL VASTO _+
| | | (1239 - 1296)
| |_Alice of DEL VASTO _|
| (1269 - 1292) |
| |_Luigia DI CEVA _____
|
|
|--Mary FITZALAN
| (.... - 1396)
| _John DE WARENNE ____+
| | (1231 - 1304)
| _William DE WARENNE _|
| | (1255 - 1286) |
| | |_Alice of LUSIGNAN __+
| | (1224 - 1255)
|_Alice DE WARENNE ___|
(1287 - 1338) |
| _Robert DE VERE _____+
| | (1240 - 1296)
|_Joan DE VERE _______|
(1255 - 1293) |
|_Alice DE SANFORD ___
(1229 - 1312)