Nielsen Hayden genealogy
Ancestors of John de Grey
1329 - 1375 (~ 56 years)
┌── Robert de Grey 
( - Between 25 Sep 1240 and 12 Jun 1245) =>
( - Between 25 Sep 1240 and 12 Jun 1245) => ┌── Walter de Grey (of Rotherfield, Oxfordshire, England - 1267)
(of Rotherfield, Oxfordshire, England - 1267) │ └── Amice
│
┌── Robert de Grey (of Rotherfield, Oxfordshire, England - Bef 27 May 1295)
(of Rotherfield, Oxfordshire, England - Bef 27 May 1295) │ │
│ │ ┌── William de Duston (of Duston, Northamptonshire, England - Bef 31 Aug 1231) =>
(of Duston, Northamptonshire, England - Bef 31 Aug 1231) => │ └── Isabel de Duston ( - Between 1304 and 1305)
( - Between 1304 and 1305) │ └── Mary ( - Aft 1235)
( - Aft 1235) │
┌── John de Grey (Abt 1272 of Rotherfield, Oxfordshire, England - 17 Oct 1311)(m. Bef 14 Jan 1297)
(Abt 1272 of Rotherfield, Oxfordshire, England - 17 Oct 1311)(m. Bef 14 Jan 1297) │ │
│ │ ┌── Robert de Valoines (of Shabbington, Buckinghamshire, England - Bef 1234) =>
(of Shabbington, Buckinghamshire, England - Bef 1234) => │ │ ┌── Thomas de Valoines (of Shabbington, Buckinghamshire, England - bur.Abt 1275)
(of Shabbington, Buckinghamshire, England - bur.Abt 1275) │ └── Joan de Valoines ( - Bef 12 Nov 1312)
( - Bef 12 Nov 1312) │ └── Joan ( - Aft 1302)
( - Aft 1302) │
┌── John de Grey (9 Oct 1300 - 1 Sep 1359 Rotherfield, Oxfordshire, England)(m. Bef 1 Mar 1312)
(9 Oct 1300 - 1 Sep 1359 Rotherfield, Oxfordshire, England)(m. Bef 1 Mar 1312) │ │
│ │ ┌── Hugh de Odingsells (of Maxstoke, Warwickshire, England -
│ │ │ Between 1235 and 13 May 1239)(m. Aft 1198)
(of Maxstoke, Warwickshire, England -│ │ │ Between 1235 and 13 May 1239)(m. Aft 1198)
│ │ ┌── William de Odingsells (of Maxstoke, Warwickshire, England - 1271)
(of Maxstoke, Warwickshire, England - 1271) │ │ │ └── Basilia de Limesi ( - Aft 1224)(m. Aft 1198) =>
( - Aft 1224)(m. Aft 1198) => │ │ │
│ │ ┌── William de Odingsells (of Solihull, Warwickshire, England - 1294)
(of Solihull, Warwickshire, England - 1294) │ │ │ └── Joan
│ │ │
│ └── Margaret de Odingsells (Abt 1277 - Aft 21 Apr 1330 bur.Cogges, Oxfordshire, England)
(Abt 1277 - Aft 21 Apr 1330 bur.Cogges, Oxfordshire, England) │ (m. Bef 14 Jan 1297)
│ │
│ │ ┌── Robert fitz Walter (Little Dunmow, Essex, England - 9 Dec 1235) =>
(Little Dunmow, Essex, England - 9 Dec 1235) => │ │ ┌── Walter fitz Robert (Abt 1219 of Woodham Walter, Essex, England - Bef 10 Apr 1258)
(Abt 1219 of Woodham Walter, Essex, England - Bef 10 Apr 1258) │ │ │ └── Rohese ( - 1256 Woodham Walter, Essex, England)
( - 1256 Woodham Walter, Essex, England) │ │ │
│ └── Ela fitz Walter ( - Aft 2 Jul 1295)
( - Aft 2 Jul 1295) │ │
│ │ ┌── William I Longespée (1170 - Abt 1225 bur.Salisbury Cathedral, Wiltshire, England)
(1170 - Abt 1225 bur.Salisbury Cathedral, Wiltshire, England) │ │ │ (m. Bef Sep 1197) =>
│ └── Ida Longespée ( - Aft 1261)
( - Aft 1261) │ └── Ela of Salisbury (Abt 1191 Amesbury, Wiltshire, England -
│ 24 Aug 1261 Lacock, Wiltshire, England)(m. Bef Sep 1197) =>
(Abt 1191 Amesbury, Wiltshire, England -│ 24 Aug 1261 Lacock, Wiltshire, England)(m. Bef Sep 1197) =>
│
John de Grey (Between 1319 and 1329 of Rotherfield, Oxfordshire, England - 4 Jun 1375)
│
│ ┌── Brian Fitz Alan (of Bedale, Yorkshire, England - 1 Jun 1306 bur.Bedale, Yorkshire, England)
(of Bedale, Yorkshire, England - 1 Jun 1306 bur.Bedale, Yorkshire, England) │ │ (m. Bef 2 Jul 1297)
└── Katherine Fitz Alan (Abt 1300 - Bef 1340 bur.Black Friars, York, Yorkshire, England)(m. Bef 1 Mar 1312)
(Abt 1300 - Bef 1340 bur.Black Friars, York, Yorkshire, England)(m. Bef 1 Mar 1312) └── Maud ( - Aft 10 Apr 1340 bur.Church of the Black Friars, York, Yorkshire, England)
( - Aft 10 Apr 1340 bur.Church of the Black Friars, York, Yorkshire, England) (m. Bef 2 Jul 1297)