1. SIR WILLIAM¹ DE MOHUN was born between 953 and 1099, and died between 1012 and 1209. He married ADELIZ.
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WILLIAM2 II, b. before 1113, d. before 1155; m. (PL-4) AGNES DE GAUNT.

2. WILLIAM² DE MOHUN II (William¹), son of (1) Sir William¹ and Adeliz, was born before 1113^[276], and died between 1113 and 1155^[276]. He married (PL-4) AGNES DE GAUNT, daughter of (PL-3) Walter, Earl of Lincoln and (AER-20) Maud (of BRITTANY). ^{[276, 1725, 2283]}
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WILLIAM3 III, b. before 1142, d. in 1176; m. (AJX-7) GODEHEUT DE TOENI.

3. WILLIAM³ DE MOHUN III (William², William¹), son of (2) William² II and (PL-4) Agnes (de GAUNT), was born before 1142^[276], and died in 1176^[276]. He married (AJX-7) GODEHEUT DE TOENI, daughter of (AJX-3) Roger III and (U-24) Ida (of HAINAUT) TOENI (DE CONCHES), who died before 1186^[276]. ^{[1725, 610, 2283, 3335]}
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WILLIAM4 IV, b. circa 1159, d. in Oct. 1193; m. LUCY.

4. WILLIAM⁴ DE MOHUN IV (William³, William², William¹), son of (3) William³ III and (AJX-7) Godeheut (de TOENI), was born circa 1159^[276], and died in Oct. 1193^[276]. He married LUCY, who died after 1201^[276]. ^{[1725, 611, 2283]}
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REYNOLD5 I, EARL OF SOMERSET, b. before 1186, d. in 1213; m. (FZ-3) ALICE DE BRIWERE.

5. REYNOLD⁵ DE MOHUN I, EARL OF SOMERSET (William⁴, William³, William², William¹), son of (4) William⁴ IV and Lucy, was born before 1186^[276], and died in 1213^[276]. He married (FZ-3) ALICE DE BRIWERE, daughter of (FZ-2) Sir William and Beatrice (de VAUX), who died in 1226^[276]. ^{[612, 1725, 2283]}
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SIR REYNOLD6 II, b. circa 1206, d. on 20 Jan. 1257/8; m. (XN-5) HAWISE FITZ GEOFFREY.

6. SIR REYNOLD⁶ DE MOHUN II (Reynold⁵, William⁴, William³, William², William¹), son of (5) Reynold⁵ I, Earl of Somerset and (FZ-3) Alice (de BRIWERE), was born circa 1206^[276], and died on 20 Jan. 1258^[276]. He married (XN-5) HAWISE FITZ GEOFFREY, daughter of (XN-2) Geoffrey, Earl of Essex and (L-20) Aveline (de CLARE), who died before 1243^[276]. ^{[613, 3339, 2283]}
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ALICE7, d. between 1282 and 1284; m. (DO-2) ROBERT IV DE BEAUCHAMP.

7. ALICE⁷ DE MOHUN (Reynold⁶, Reynold⁵, William⁴, William³, William², William¹), daughter of (6) Sir Reynold⁶ II and (XN-5) Hawise (FITZ GEOFFREY), was born between 1220 and 1234, and died between 1282 and 1284^[276]. She married (DO-2) ROBERT IV DE BEAUCHAMP, son of (DO-1) Robert III BEAUCHAMP, who was born before 1226^[276], and died between 1262 and 1266^[276]. ^{[1065, 2546, 3339, 2283, 1970]}
Children: See (DO-2) Robert IV de BEAUCHAMP