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. about 1130[2]; m. (RX-4) AGNES DE GAUNT, daughter of (RX-3) Walter, Earl of Lincoln and (AJA-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 (RX-4) AGNES DE GAUNT, daughter of (RX-3) Walter, Earl of Lincoln and (AJA-20) Maud (of BRITTANY). ^{[8, 10]}
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WILLIAM3 DE MOHUN III, b. before 1142[2]; d. in 1176[2]; m. (APG-7) GODEHEUT DE TOENI, d. about 1170[2], daughter of (APG-3) Roger III and (V-24) Ida (of HAINAUT) DE TOENI.

3. WILLIAM³ DE MOHUN III (William², William¹), son of (2) William² II and (RX-4) Agnes (de GAUNT), was born before 1142^[2], and died in 1176^[2]. He married (APG-7) GODEHEUT DE TOENI, daughter of (APG-3) Roger III and (V-24) Ida (of HAINAUT) DE TOENI, who died about 1170^[2]. ^{[3, 8, 10, 12]}
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WILLIAM4 DE MOHUN IV, b. about 1159[2]; d. in Oct. 1193[2]; m. LUCY _____, d. about 1240[2].

4. WILLIAM⁴ DE MOHUN IV (William³, William², William¹), son of (3) William³ III and (APG-7) Godeheut (de TOENI), was born about 1159^[2], and died in Oct. 1193^[2]. He married LUCY _____, who died about 1240^[2]. ^{[4, 8, 10]}
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REYNOLD5 DE MOHUN I, EARL OF SOMERSET, b. before 1186[2]; d. in 1213[2]; m. (HE-3) ALICE DE BRIWERE, d. in 1226[2], daughter of (HE-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 (HE-3) ALICE DE BRIWERE, daughter of (HE-2) Sir William and Beatrice (de VAUX), who died in 1226^[2]. ^{[5, 8, 10]}
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SIR REYNOLD6 DE MOHUN II, b. about 1206[2]; d. on 20 JAN 1257/8[2]; m. (AAW-5) HAWISE FITZ GEOFFREY, d. about 1230[2], daughter of (AAW-2) Geoffrey, Earl of Essex and (Q-95) Aveline (de CLARE).

6. SIR REYNOLD⁶ DE MOHUN II (Reynold⁵, William⁴, William³, William², William¹), son of (5) Reynold⁵ I, Earl of Somerset and (HE-3) Alice (de BRIWERE), was born between 1157/8 and 1214^[2], and died on 20 JAN 1257/8^[2]. He married (AAW-5) HAWISE FITZ GEOFFREY, daughter of (AAW-2) Geoffrey, Earl of Essex and (Q-95) Aveline (de CLARE), who died about 1230^[2]. ^{[6, 10, 13]}
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ALICE7 DE MOHUN, b. about 1228[1]; d. about 1283[2]; m. (EF-2) ROBERT IV DE BEAUCHAMP, b. before 1226[2], d. about 1264[2], son of (EF-1) Robert III DE BEAUCHAMP.

7. ALICE⁷ DE MOHUN (Reynold⁶, Reynold⁵, William⁴, William³, William², William¹), daughter of (6) Sir Reynold⁶ II and (AAW-5) Hawise (FITZ GEOFFREY), was born between 1209/10 and 1235^[1], and died between 1282 and 1284^[2]. She married (EF-2) ROBERT IV DE BEAUCHAMP, son of (EF-1) Robert III DE BEAUCHAMP, who was born before 1226^[2], and died about 1264^[2]. ^{[7, 9, 10, 11, 13]}
Children: See (EF-2) Robert IV de BEAUCHAMP