Nielsen Hayden genealogy
Descendants of (Unknown) de Avenal
Father: Richard de Avenal
(Unknown) de Avenal
William I "The Lion", King of Scotland (1143 - 4 Dec 1214 Stirling, Stirlingshire, Scotland)
   └─ Isabel of Scotland
    Robert de Ros (Between 1170 and 1172 Helmsley, Yorkshire, England -
    Bef 23 Dec 1226 bur.Temple Church, London, England)(m. 1191 Haddington, East Lothian, Scotland)
    Bef 23 Dec 1226 bur.Temple Church, London, England)(m. 1191 Haddington, East Lothian, Scotland)
       ├─ Robert de Ros (of Wark, Northumberland, England - Bef Nov 1269)
       │
       │    ├─ Robert de Ros (of Wark, Northumberland, England - Bef 20 Apr 1274) =>
       │    │ + Margaret de Brus ( - Bef 30 Jan 1307)
       │     + Roger de Merlay (of Morpeth, Northumberland, England - Bef 4 Dec 1265)(m. Bef 1241)
       └─ William I de Ros (Aft 1192 of Helmsley, Yorkshire, England -
        1264 bur.Kirkham Priory, Yorkshire, England)
        1264 bur.Kirkham Priory, Yorkshire, England)
        Lucy fitz Peter (of Blaen Llyfni, Cathedine, Brecconshire, Wales - Aft 29 Sep 1266)(m. Bef 24 Jan 1234)
           ├─ Lucy de Ros ( - Aft 1278 bur.Grey Friars, York, Yorkshire, England) =>
           │ + William III de Kyme (of Sotby, Lincolnshire, England - Bef 3 Sep 1259)
           ├─ Robert de Ros (of Helmsley, Yorkshire, England -
           │ 17 May 1285 bur.Kirkham Priory, Yorkshire, England) =>
           │ 17 May 1285 bur.Kirkham Priory, Yorkshire, England) =>
           │ + Isabel d'Aubeney (Abt 1233 - 15 Jun 1301 bur.Newstead Priory, Lincolnshire, England)
           │ (m. Bef 17 May 1244)
           │ (m. Bef 17 May 1244)
           ├─ William de Ros (of Ingmanthorpe in Kirk Deighton, Yorkshire, England -
           │ Bef 28 May 1310 bur.Grey Friars, York, Yorkshire, England) =>
           │ Bef 28 May 1310 bur.Grey Friars, York, Yorkshire, England) =>
           │ + Eustache fitz Ralph (of Greasley, Nottinghamshire, England -
           │ Aft 1300 bur.Grey Friars, York, Yorkshire, England)(m. 1268)
           │ Aft 1300 bur.Grey Friars, York, Yorkshire, England)(m. 1268)
           └─ Alice de Ros ( - Bef 30 Apr 1286 bur.Friars Minor, Lincoln, Lincolnshire, England) =>
            + John Comyn (of Badenoch, Scotland - Bef 18 Jul 1278)(m. Abt 1260)