1. WILLIAM¹ AGUILLON was born between 1134 and 1230, and died in 1244^[1]. He married (AA-6) JOAN, daughter of (AA-5) Peter and (IW-2) Isabel (de CHESNEY) FITZ HENRY.
Child:

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ROBERT2 AGUILLON, b. before 1244; d. on 15 Feb. 1285/6; m. before Aug. 1256 (OF-15) JOAN DE FERRERS, d. before Oct. 1267[1], daughter of (OF-13) William, 5th Earl of Derby and (YZ-8) Sibyl (MARSHAL).

2. ROBERT² AGUILLON (William¹), son of (1) William¹ and (AA-6) Joan AGUILLON, was born before 1244^[1], and died on 15 Feb. 1285/6^[1]. He married before Aug. 1256, (OF-15) JOAN DE FERRERS^[1], daughter of (OF-13) William, 5th Earl of Derby and (YZ-8) Sibyl (MARSHAL), who died before Oct. 1267^[1]. ^[2]
Child:

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ISABEL3 AGUILLON, b. about 1258; d. after 1316; m. (CY-2) SIR HUGH BARDOLF, b. about 29 Sept. 1259[1], d. in Sept. 1304[1], son of (CY-1) William and (QS-11) Juliana (de GOURNAY) BARDOLF.

3. ISABEL³ AGUILLON (Robert², William¹), daughter of (2) Robert² and (OF-15) Joan (de FERRERS) AGUILLON, was born about 1258^[1], and died between 1316 and 1377^[1]. She married (CY-2) SIR HUGH BARDOLF, son of (CY-1) William and (QS-11) Juliana (de GOURNAY) BARDOLF, who was born about 29 Sept. 1259^[1], and died in Sept. 1304^[1]. ^[3]
Child: See (CY-2) Sir Hugh BARDOLF