Nielsen Hayden genealogy
Ancestors of Hugh de Mortimer
Abt 1275 - Bef 1304 (~ 29 years)
┌── Robert de Mortimer 
(of Woodham, Essex, England - ??)
(of Woodham, Essex, England - ??) ┌── Robert de Mortimer (of Richard's Castle, Herefordshire, England - Bef 3 Jul 1219)
(of Richard's Castle, Herefordshire, England - Bef 3 Jul 1219) │ (m. Bef Jun 1211)
┌── Hugh de Mortimer (Abt 1219 of Richard's Castle, Herefordshire, England - 18 Nov 1274)
(Abt 1219 of Richard's Castle, Herefordshire, England - 18 Nov 1274) │ │ ┌── Hugh de Say (of Richard's Castle, Herefordshire, England - Bef 29 Sep 1190) =>
(of Richard's Castle, Herefordshire, England - Bef 29 Sep 1190) => │ │ ┌── Hugh de Say (of Richard's Castle, Herefordshire, England - Between 1195 and 1196)
(of Richard's Castle, Herefordshire, England - Between 1195 and 1196) │ │ │ └── Lucy de Clifford (of Clifford, Herefordshire, England - ??) =>
(of Clifford, Herefordshire, England - ??) => │ │ │
│ └── Margaret de Say (of Richard's Castle, Herefordshire, England - Bef 29 Sep 1242)
(of Richard's Castle, Herefordshire, England - Bef 29 Sep 1242) │ (m. Bef Jun 1211)
│ │
│ │ ┌── Robert Marmion (Between 1150 and 1160 of Pulverbatch, Shropshire, England -
│ │ │ 15 May 1218) =>
(Between 1150 and 1160 of Pulverbatch, Shropshire, England -│ │ │ 15 May 1218) =>
│ └── Mabel Marmion ( - Aft 1199)
( - Aft 1199) │ └── Maud de Beauchamp ( - 1181) =>
( - 1181) => │
┌── Robert de Mortimer (Abt 1252 of Richard's Castle, Herefordshire, England -
│ 7 Apr 1287 bur.Worcester Cathedral, Worcestershire, England)(m. Bef 1273)
(Abt 1252 of Richard's Castle, Herefordshire, England -│ 7 Apr 1287 bur.Worcester Cathedral, Worcestershire, England)(m. Bef 1273)
Hugh de Mortimer (Abt 1275 of Richard's Castle, Herefordshire, England - Bef 5 Aug 1304)
│
│ ┌── Geoffrey de Porhoët (1092 - 1141) =>
(1092 - 1141) => │ ┌── Alan la Zouche (of North Molton, Devon, England - 1190)
(of North Molton, Devon, England - 1190) │ │ └── Hawise Fergant =>
=> │ │
│ ┌── Roger la Zouche (Abt 1175 of Black Torrington, Devon, England - Bef 14 May 1238)
(Abt 1175 of Black Torrington, Devon, England - Bef 14 May 1238) │ │ │
│ │ │ ┌── Philip de Belmeis (Abt 1106 of Tong, Shropshire, England - Bef 1154)
(Abt 1106 of Tong, Shropshire, England - Bef 1154) │ │ │ │ (m. Bef 1139) =>
│ │ └── Alice de Belmeis (of Tong, Shropshire, England - Aft 1190)
(of Tong, Shropshire, England - Aft 1190) │ │ └── Maud le Meschin (of Skipton-in-Craven, Yorkshire, England - Aft 1180)
(of Skipton-in-Craven, Yorkshire, England - Aft 1180) │ │ (m. Bef 1139) =>
│ │
│ ┌── William la Zouche (of King's Nympton, Devon, England - Bef 3 Feb 1272)(m. Between 1242 and 1243)
(of King's Nympton, Devon, England - Bef 3 Feb 1272)(m. Between 1242 and 1243) │ │ │
│ │ │ ┌── Manasser Biset ( - 1177) =>
( - 1177) => │ │ │ ┌── Henry Biset (of Kidderminster, Worcestershire, England - 1208)
(of Kidderminster, Worcestershire, England - 1208) │ │ │ │ └── Alice de Falaise
│ │ │ │
│ │ └── Margaret Biset (of Kidderminster, Worcestershire, England - Aft 15 Aug 1232)
(of Kidderminster, Worcestershire, England - Aft 15 Aug 1232) │ │ └── (Unknown first wife of Henry Biset) (Abt 1160 - ??)
(Abt 1160 - ??) │ │
└── Joyce la Zouche ( - Bef 13 Mar 1290)(m. Bef 1273)
( - Bef 13 Mar 1290)(m. Bef 1273) │
│ ┌── William de Howbridge (of Howbridge in Witham, Essex, England - Bef May 1238)
(of Howbridge in Witham, Essex, England - Bef May 1238) └── Maud de Howbridge (of Howbridge, Essex, England - ??)(m. Between 1242 and 1243)
(of Howbridge, Essex, England - ??)(m. Between 1242 and 1243) │
│ ┌── Robert Picot (of Quy, Cambridgeshire, England - ??)
(of Quy, Cambridgeshire, England - ??) └── Agnes Picot