1. SIR WILLIAM¹ DE MOHUN was born between 952/3 and 1099, and died between 1012 and 1209. He married ADELIZ _____.
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WILLIAM2 DE MOHUN II, b. before 1113[2]; d. before 1155[2]; m. (RT-4) AGNES DE GAUNT, daughter of (RT-3) Walter, Earl of Lincoln and (AII-20) Maud (of BRITTANY).

2. WILLIAM² DE MOHUN II (William¹), son of (1) Sir William¹ and Adeliz (_____), was born before 1113^[2], and died between 1113 and 1155^[2]. He married (RT-4) AGNES DE GAUNT, daughter of (RT-3) Walter, Earl of Lincoln and (AII-20) Maud (of BRITTANY). ^{[2, 8, 10]}
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WILLIAM3 DE MOHUN III, b. before 1142[2]; d. in 1176[2]; m. (APS-7) GODEHEUT DE TOENI, d. before 1186[2], daughter of (APS-3) Roger III and (U-24) Ida (of HAINAUT) DE TOENI (DE CONCHES).

3. WILLIAM³ DE MOHUN III (William², William¹), son of (2) William² II and (RT-4) Agnes (de GAUNT), was born before 1142^[2], and died in 1176^[2]. He married (APS-7) GODEHEUT DE TOENI, daughter of (APS-3) Roger III and (U-24) Ida (of HAINAUT) DE TOENI (DE CONCHES), who died before 1186^[2]. ^{[8, 3, 10, 12, 2]}
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WILLIAM4 DE MOHUN IV, b. about 1159[2]; d. in Oct. 1193[2]; m. LUCY _____, d. after 1201[2].

4. WILLIAM⁴ DE MOHUN IV (William³, William², William¹), son of (3) William³ III and (APS-7) Godeheut (de TOENI), was born about 1159^[2], and died in Oct. 1193^[2]. He married LUCY _____, who died after 1201^[2]. ^{[8, 4, 10, 2]}
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REYNOLD5 DE MOHUN I, EARL OF SOMERSET, b. before 1186[2]; d. in 1213[2]; m. (HD-3) ALICE DE BRIWERE, d. in 1226[2], daughter of (HD-2) Sir William and Beatrice (de VAUX).

5. REYNOLD⁵ DE MOHUN I, EARL OF SOMERSET (William⁴, William³, William², William¹), son of (4) William⁴ IV and Lucy (_____), was born before 1186^[2], and died in 1213^[2]. He married (HD-3) ALICE DE BRIWERE, daughter of (HD-2) Sir William and Beatrice (de VAUX), who died in 1226^[2]. ^{[5, 8, 10, 2]}
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SIR REYNOLD6 DE MOHUN II, b. about 1206[2]; d. on 20 Jan. 1257/8[2]; m. (AAS-5) HAWISE FITZ GEOFFREY, d. before 1243[2], daughter of (AAS-2) Geoffrey, Earl of Essex and (P-97) Aveline (de CLARE).

6. SIR REYNOLD⁶ DE MOHUN II (Reynold⁵, William⁴, William³, William², William¹), son of (5) Reynold⁵ I, Earl of Somerset and (HD-3) Alice (de BRIWERE), was born about 1206^[2], and died on 20 Jan. 1257/8^[2]. He married (AAS-5) HAWISE FITZ GEOFFREY, daughter of (AAS-2) Geoffrey, Earl of Essex and (P-97) Aveline (de CLARE), who died before 1243^[2]. ^{[6, 13, 10, 2]}
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ALICE7 DE MOHUN, b. about 1228[1]; d. between 1282 and 1284[2]; m. (ED-2) ROBERT IV DE BEAUCHAMP, b. before 1226[2], d. between 1262 and 1266[2], son of (ED-1) Robert III DE BEAUCHAMP.

7. ALICE⁷ DE MOHUN (Reynold⁶, Reynold⁵, William⁴, William³, William², William¹), daughter of (6) Sir Reynold⁶ II and (AAS-5) Hawise (FITZ GEOFFREY), was born about 1228^[1], and died between 1282 and 1284^[2]. She married (ED-2) ROBERT IV DE BEAUCHAMP, son of (ED-1) Robert III DE BEAUCHAMP, who was born before 1226^[2], and died between 1262 and 1266^[2]. ^{[7, 11, 13, 10, 9, 1, 2]}
Children: See (ED-2) Robert IV de BEAUCHAMP