Nielsen Hayden genealogy
Descendants of Roger de Kilton
Father: Ilger
Roger de Kilton
   └─ Maud de Kilton (of Kilton Castle, Cleveland, Yorkshire, England - ??)
    Robert de Thweng (of Thwing, Bridlington, Yorkshire, England - Between 1245 and 1257)(m. Bef Jan 1229)
       └─ Marmaduke de Thweng (of Kilton in Brotton, Yorkshire, England - Between 1282 and 1284)
        Lucy de Brus ( - Aft 29 Mar 1282)(m. Abt 1242)
           ├─ Marmaduke de Thweng (of Kilton in Brotton, Yorkshire, England - Bef 26 Feb 1323) =>
           │ + Isabel de Ros (of Ingmanthorpe in Kirk Deighton, Yorkshire, England - 1309)(m. 1273)
           └─ Robert de Thweng (of Kilton in Brotton, Yorkshire, England - Bef 1285) =>
            + Alice de Merlay (Abt 1258 - Bef 7 Feb 1268)