| Henry De Percy Born: 6 FEB 1299/1300 Topcliffe, Yorkshire, England Died: 26 FEB 1351/1352 Warkworth Castle, Alnwick, Northumberland, England | |||||
| Mary Plantagenet Born: ABT 1320 Grismond Castle, Monmouth, Monmouthshire, England Died: 1 SEP 1362 | |||||
| Sybil de Montgomery Born: ABT 1060 Died: ABT 1094 | |||||