Nielsen Hayden genealogy
Ancestors of Thomas de Clare
1248 - 1287 (~ 44 years) ┌── Richard de Clare (Abt 1153 of Clare, Suffolk, England - Between 30 Oct 1217 and 28 Nov 1217)
│ (m. Abt 1180) =>
┌── Gilbert de Clare (Abt 1180 - 25 Oct 1230 Penrose, Brittany, France)(m. 9 Oct 1217)
│ └── Amice of Gloucester ( - 1 Jan 1225)(m. Abt 1180) =>
│
┌── Richard de Clare (4 Aug 1222 of Clare, Suffolk, England - Jul 1262 Ashenfield, Waltham, Kent, England)
│ (m. Abt 25 Jan 1238)
│ │
│ │ ┌── William Marshal (Abt 1146 - 14 May 1219 Caversham, Oxfordshire, England)
│ │ │ (m. Aug 1189 London, England) =>
│ └── Isabel Marshal (9 Oct 1200 Pembroke, Pembrokeshire, Wales -
│ 17 Jan 1240 Berkhamsted, Hertfordshire, England)(m. 9 Oct 1217)
│ 17 Jan 1240 Berkhamsted, Hertfordshire, England)(m. 9 Oct 1217)
│ └── Isabel de Clare (1173 - 7 Mar 1220 bur.Tintern Abbey, Monmouthshire, Wales)
│ (m. Aug 1189 London, England) =>
│
Thomas de Clare (Between 1243 and 1248 - 29 Aug 1287 Ireland)
│
│ ┌── Roger de Lacy (Abt 1165 of Halton, Runcorn, Cheshire, England -
│ │ 1 Oct 1211 bur.Stanlaw Abbey, Wirrall, Cheshire, England) =>
│ │ 1 Oct 1211 bur.Stanlaw Abbey, Wirrall, Cheshire, England) =>
│ ┌── John de Lacy (Abt 1192 of Pontefract, Yorkshire, England -
│ │ 22 Jul 1240 bur.Stanlaw Abbey, Wirrall, Cheshire, England)(m. Bef 21 Jun 1221)
│ │ 22 Jul 1240 bur.Stanlaw Abbey, Wirrall, Cheshire, England)(m. Bef 21 Jun 1221)
│ │ └── Maud de Clare ( - 1213) =>
│ │
└── Maud de Lacy ( - Bef 10 Mar 1289)(m. Abt 25 Jan 1238)
│
│ ┌── Robert de Quincy ( - Aft 20 May 1217 London, England)(m. Between 1197 and 1200) =>
└── Margaret de Quincy (Bef 1217 - Bef 30 Mar 1266 Hampstead, Middlesex, England)(m. Bef 21 Jun 1221)
└── Hawise of Chester (1180 - Bef 19 Feb 1243)(m. Between 1197 and 1200) =>