Nielsen Hayden genealogy
Descendants of Robert de Ros
Abt 1272 - Aft 1295 (~ 24 years)Father: Robert de Ros (of Wark, Northumberland, England - Bef 20 Apr 1274)
Mother: Margaret de Brus ( - Bef 30 Jan 1307)
Robert de Ros (Abt 1272 Wark, Northumberland, England - Aft 1295)
Lora (m. Bef 1292)
   └─ Margaret de Ros (Abt 1292 Scotland - Aft 26 Dec 1321)
    John Salvain (Abt 1280 Yorkshire, England - Between 1312 and 1320)(m. Bef 1307)
       └─ Gerard Salvain (Bef 5 Oct 1307 of North Duffield, Yorkshire, England - 1 Aug 1369)
        [Unknown] Gray (Bef 13 Mar 1309 - Bef 1362)(m. 1325)
           └─ John Salvain (Abt 1325 - Bef Aug 1366)
           
               └─ Gerard Salvain (Abt 1357 of North Duffield, Yorkshire, England - Bef 19 Feb 1418)
                + Alice (Abt 1360 - Aft 1428)(m. Abt 1375)