Nielsen Hayden genealogy
Ancestors of Lucy de Thweng
- 1346 ┌── 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)(m. Abt 1242)
│ └── Maud de Kilton (of Kilton Castle, Cleveland, Yorkshire, England - ??)(m. Bef Jan 1229) =>
│
┌── Robert de Thweng (of Kilton in Brotton, Yorkshire, England - Bef 1285)
│ │
│ │ ┌── Peter de Brus (Bef 1201 of Skelton, Yorkshire, England - Bef 15 Nov 1240)(m. Bef 1219) =>
│ └── Lucy de Brus ( - Aft 29 Mar 1282)(m. Abt 1242)
│ └── Hawise de Lancaster (m. Bef 1219) =>
│
Lucy de Thweng ( - 8 Jun 1346 bur.Guisborough, Yorkshire, England)
│
│ ┌── Roger de Merlay (of Morpeth, Northumberland, England - ??)
│ ┌── Roger de Merlay (of Morpeth, Northumberland, England - Bef 4 Dec 1265)(m. Bef 1241)
│ │
└── Alice de Merlay (Abt 1258 - Bef 7 Feb 1268)
│
│ ┌── Robert de Ros (of Wark, Northumberland, England - Bef Nov 1269) =>
└── Isabel de Ros ( - Bef 7 May 1275)(m. Bef 1241)