Nielsen Hayden genealogy
Ancestors of Robert de Ros
- 1162 ┌── Piers de Ros (of Roos, Holderness, Yorkshire, England - Bef 1130)(m. Bef 1121)
Robert de Ros (of Helmsley, Yorkshire, England - 1162)
│ ┌── William Espec (of Old Warden, Bedfordshire, England - Aft 1130)
└── Adeline Espec ( - Bef 1157)(m. Bef 1121)