1. ROBERT¹ DE MORTIMER was born between 1177 and 7 April 1273, and died on 7 April 1287^[1]. He married (AHU-19) JOYCE LA ZOUCHE, daughter of (AHU-13) William LA ZOUCHE, who was buried on 13 MAR 1289/90^[1].
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SIR WILLIAM2 LA ZOUCHE, b. about 1240; d. about 1350/1; m. (APG-13) ALICE (DE TOENI) DE BEAUCHAMP of Flamstead, Hertfordshire, England, United Kingdom, b. of Flamstead in 1284, d. on 1 JAN 1324/5, daughter of (APG-11) Ralph VII, Lord of Flamstead and Mary (_____).

2. SIR WILLIAM² LA ZOUCHE (Robert de MORTIMER¹), son of (1) Robert¹ and (AHU-19) Joyce (la ZOUCHE) DE MORTIMER, was born between 1191 and 1288, and died between 1297/8 and 1397. He married (APG-13) ALICE (DE TOENI) DE BEAUCHAMP of Flamstead, daughter of (APG-11) Ralph VII, Lord of Flamstead and Mary (_____), who was born in 1284 of Flamstead, and died on 1 JAN 1324/5. ^[5]
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JOYCE3 LA ZOUCHE DE MORTIMER, b. about 1325/6; d. about 1400; m. (GH-4) JOHN DE BOTETOURTE, 2ND BARON BOTETOURTE, b. in 1318[1], d. in 1385[1], son of (GH-3) Thomas and (AMR-11) Joan (de SOMERY) DE BOTETOURTE.

3. JOYCE³ LA ZOUCHE DE MORTIMER (William², Robert¹), daughter of (2) Sir William² and (APG-13) Alice (de TOENI) (DE BEAUCHAMP), was born between 1312/3 and 1325/6, and died between 1368 and 1434/5. She married (GH-4) JOHN DE BOTETOURTE, 2ND BARON BOTETOURTE, son of (GH-3) Thomas and (AMR-11) Joan (de SOMERY) DE BOTETOURTE, who was born in 1318^[1], and died in 1385^[1]. ^{[2, 3, 4, 5, 6]}
Child: See (GH-4) John de BOTETOURTE, 2nd Baron Botetourte