Richard and Elizabeth had 5 kids. Why is there only one listed? Grey was the son of Henry de Grey (died 1379), and succeeded his grandfather John de Grey (1305–1392) to the Grey of Codnor barony. In 1387 he married Elizabeth, daughter of Ralph Basset of Sapcote, who died after 1446 and they had two sons and three daughters: John (c. 1396–1430), who succeeded as fifth baron; Henry (c. 1405–1443), who succeeded his brother as sixth baron; Elizabeth, who married John la Zouche; Eleanor, who married Thomas Newport; and Lucy, who married Rowland Lenthall.[4] The barony fell into abeyance between the three sisters following the death of the seventh baron; the termination of the abeyance in 1989 was granted in the favor of a descendant of Lucy.[1][2 Wiki.
https://fmg.ac/Projects/MedLands/ENGLISHNOBILITYMEDIEVAL3D-K.htm#Ri...
RICHARD Grey, son of HENRY de Grey & his wife Joan de Cobham ([1371]-1 Aug 1418, bur Aylesford). Lord Grey (of Codnor).
m ELIZABETH Basset, daughter of RALPH Basset Lord Basset (of Sapcote) & his second wife Alice Derby (-after 24 Aug 1446).
Richard & his wife had children:
1. JOHN Grey (1396 or before-14 Sep 1430). Lord Grey (of Codnor). m as her first husband, ELIZABETH of Kildare, daughter of GERALD Earl of Kildare & his second wife Agnes Darcy (-6 Aug 1452). She married secondly (1432) as his second wife, James Butler Earl of Ormond.
2. HENRY Grey ([1405]-17 Jul 1444). Lord Grey (of Codnor). m (before 5 May 1434) as her first husband, MARGARET Percy, daughter of HENRY Percy of Atholl & his wife Elizabeth --- (-Sep 1464). She married secondly Richard de Vere. Henry & his wife had children:
a) HENRY Grey ([1424/25]-1496). Lord Grey (of Codnor). m firstly (after 31 Aug 1454) CATHERINE Strangways, daughter of THOMAS Strangways & his wife Catherine Neville of the Earls of Westmoreland. m secondly as her second husband, CATHERINE Stourton, widow of WILLIAM Berkeley of Beverston, Gloucestershire, daughter of WILLIAM Lord Stourton & his wife Margaret Chidiock (-London 25 Nov 1521). She married thirdly William de la Pole.
3. ELIZABETH Grey . m JOHN Zouche, son of WILLIAM Zouche Lord Zouche & his wife ---.
4. ELEANOR Grey . m THOMAS Newport of High Ercall, Shropshire, son of ---.
5. LUCY Grey . m ROWLAND Lenthall of Lenthall and Hampton Court, Herefordshire, son of ---.