1. STEPHEN¹ DE SEGRAVE, 3RD LORD SEGRAVE was born between 1255 and 1301, and died between 1314 and 1411. ^[9]
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JOHN2 DE SEGRAVE, 4TH BARON SEGRAVE, b. on 4 May 1315[9]; d. on 1 April 1353[10] in Derbyshire, England, United Kingdom[10]; m. in 1337 (RV-53) MARGARET PLANTAGENET, DUTCHESS OF NORFOLK of Saxlingham, Norfolk, England, b. of Saxlingham about 1322, d. on 24 MAR 1398/9[5], daughter of (RV-48) Thomas "of Brotherton", Earl of Norfolk and (UC-2) Alice (de HALES), Countess of Norfolk.

2. JOHN² DE SEGRAVE, 4TH BARON SEGRAVE (Stephen¹), son of (1) Stephen¹, 3rd Lord Segrave, was born on 4 May 1315^[9], and died on 1 April 1353^[10] in Derbyshire^[10]. He married in 1337, (RV-53) MARGARET PLANTAGENET, DUTCHESS OF NORFOLK of Saxlingham, daughter of (RV-48) Thomas "of Brotherton", Earl of Norfolk and (UC-2) Alice (de HALES), Countess of Norfolk, who was born about 1322 of Saxlingham, and died on 24 MAR 1398/9^[5]. ^{[3, 7, 11]}
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ELIZABETH3 DE SEGRAVE, BARONESS, b. on 25 Oct. 1338 in Croxton Abbey, Norfolk; d. about 1383; m. on 25 March 1349[8] (NB-10) JOHN DE MOWBRAY, 4TH BARON MOWBRAY, b. in Epworth, Isle of Axholme, Lincolnshire, England[4, 8] on 25 June 1340[4, 8], d. in Thrace, Constantinople, Turkey[4] in 1368[4], son of (NB-9) John, 3rd Baron Mowbray and (RV-58) Joan (PLANTAGENET), Baroness.

3. ELIZABETH³ DE SEGRAVE, BARONESS (John², Stephen¹), daughter of (2) John², 4th Baron Segrave and (RV-53) Margaret (PLANTAGENET), Dutchess of Norfolk, was born on 25 Oct. 1338 in Croxton Abbey, was christened on 25 Oct. 1338 in Croxton, Leicestershire, England, and died about 1383. She married on 25 March 1349^[8], (NB-10) JOHN DE MOWBRAY, 4TH BARON MOWBRAY, son of (NB-9) John, 3rd Baron Mowbray and (RV-58) Joan (PLANTAGENET), Baroness, who was born on 25 June 1340^{[4, 8]} in Epworth^{[4, 8]}, and died in 1368^[4] in Thrace^[4]. ^{[1, 2, 3, 6, 10, 11]}
Child: See (NB-10) John de MOWBRAY, 4th Baron Mowbray