1. WILLIAM¹ DE PERCY was born between 1165 and 1231, and died between 1224 and 1341. He married ELLEN DE BALLIOL. ^[7]
Child:

+

2

i.

SIR HENRY2 DE PERCY, b. about 1235; d. on 29 Aug. 1272; m. (RH-32) ELEANOR DE WARENNE, b. in 1251[7], d. after 1282[7], daughter of (RH-22) John, 7th Earl of Surrey and (ZW-16) Alice (de LUSIGNAN).

2. SIR HENRY² DE PERCY (William¹), son of (1) William¹ and Ellen (de BALLIOL) DE PERCY, was born about 1235^[7], and died on 29 Aug. 1272^[7]. He married (RH-32) ELEANOR DE WARENNE, daughter of (RH-22) John, 7th Earl of Surrey and (ZW-16) Alice (de LUSIGNAN), who was born in 1251^[7], and died after 1282^[7]. ^[7]
Child:

+

3

i.

HENRY3 DE PERCY, 1ST LORD PERCY, b. on 25 March 1273 in Petworth, Sussex, England, United Kingdom; d. in Oct. 1314; m. (PW-7) ELEANOR DE ARUNDEL, d. in 1328[8], daughter of (PW-4) Richard I, 8th Earl of Arundel and (ACT-18) Alasia (de SALUZZO).

3. HENRY³ DE PERCY, 1ST LORD PERCY (Henry², William¹), son of (2) Sir Henry² and (RH-32) Eleanor (de WARENNE), was born on 25 March 1273 in Petworth^[7], and died in Oct. 1314^[8]. He married (PW-7) ELEANOR DE ARUNDEL, daughter of (PW-4) Richard I, 8th Earl of Arundel and (ACT-18) Alasia (de SALUZZO), who died in 1328^[8]. ^[7]
Child:

+

4

i.

HENRY4 DE PERCY, 2ND BARON PERCY, b. about 1300; d. on 26 Feb. 1351/2 in Warkworth, Northumberland, England; m. (S-79) IDOINE DE CLIFFORD, d. on 24 Aug. 1365[1, 3, 8], daughter of (S-76) Robert, 1st Lord Clifford and (O-29) Maud (de CLARE).

4. HENRY⁴ DE PERCY, 2ND BARON PERCY (Henry³, Henry², William¹), son of (3) Henry³, 1st Lord Percy and (PW-7) Eleanor (de ARUNDEL), was born about 1300^[8], and died on 26 Feb. 1351/2 in Warkworth^[8]. He married (S-79) IDOINE DE CLIFFORD, daughter of (S-76) Robert, 1st Lord Clifford and (O-29) Maud (de CLARE), who died on 24 Aug. 1365^{[1, 3, 8]}. ^{[9, 5]}
Child:

+

5

i.

MAUD5 DE PERCY, d. before 18 Feb. 1378/9; m. before 1362 (AEB-6) JOHN DE NEVILLE, 3RD BARON NEVILLE, b. about 1329[4], d. on 17 Oct. 1388[4], son of (AEB-5) Ralph, 2nd Baron Neville and (CN-5) Alice (de AUDLEY) (DE GREYSTOKE).

5. MAUD⁵ DE PERCY (Henry⁴, Henry³, Henry², William¹), daughter of (4) Henry⁴, 2nd Baron Percy and (S-79) Idoine (de CLIFFORD), was born between 1304 and 1348, and died between 1318 and 18 Feb. 1379^[4]. She married before 1362, (AEB-6) JOHN DE NEVILLE, 3RD BARON NEVILLE^[4], son of (AEB-5) Ralph, 2nd Baron Neville and (CN-5) Alice (de AUDLEY) (DE GREYSTOKE), who was born about 1329^[4], and died on 17 Oct. 1388^[4]. ^{[9, 2, 6]}
Children: See (AEB-6) John de NEVILLE, 3rd Baron Neville