William de Longespee Plantagenet, 2nd Earl of Salisbury (b c1200, d 07.02.1250)
m. (c1216) Idonea de Camville (b c1208, d 1269/70 or 1251/52, dau of Richard de Camville)
a. William de Longespee Plantagenet, 3rd Earl of Salisbury (d 1256/7)
m. (c1254) Maud de Clifford (dau of Walter de Clifford)
(1) Margaret de Longespee Plantagenet (b c1254, d 1306/10)
m. (c1256) Henry de Lacy, 3rd Earl of Lincoln, Earl of Salisbury (d c1311)
b. Richard de Longespee Plantagenet (d c12.1261)
m. Alice le Rus
c. Ela de Longespee Plantagenet (d c11.1299) Y
m. (c1244) James d'Audley (b c1225, d 11.06.1272) Y
d. Ida de Longespee Plantagenet (a 07.1271)
m. Sir Walter FitzRobert of Woodham Walter (b c1222, d before10.04.1258)
ii. Richard Plantagenet, a canon
iii. Stephen de Longespee Plantagenet (b c1216, d by 23.01.1274, Justiciar of Ireland)
m. (1243/4) Emeline de Riddlesford (b 1223, d 1275/6, dau of Walter de Riddlesford of Bray)
a. Emeline de Longespee Plantagenet (b 1252, d 1291) Y
m. (1276) Maurice 'Mael' FitzMaurice FitzGerald, Justiciar (d before 10.11.1286) Y
b. Ela de Longespee Plantagenet (d by 1276) HJY
m. (c1266) Sir Roger de la Zouche of Ashby (b c1240/2, d before 15.10.1285) HJY
iv. Nicholas de Longespee Plantagenet, Bishop of Salisbury (d 1297)
v. Isabel de Longespee Plantagenet (b after 1198, dsp by 1248)
m. William de Vesci of Alnwick (d 1253)
vi. Ela Plantagenet (d 1298)
m1. Thomas de Newburgh, 6th Earl of Warwick (dsp 06.1242)
m2. Sir Philip Basset
vii. Ida Plantagenet (b after 1198) H
m1. (spms) Ralph de Somery
m2. (by 1220) William Beauchamp of Bedford (b c1185, d 1260)
H
viii. Ela Plantagenet
m. William d'Odingsels