| b 1270, Of, Plumpton, Yorkshire, England | d 1332, | Robert De_Roos | ||
| William De_Roos | b 1177 | William I 'The_Lion' Scotland, [King] | > | |
| | b 1203 | Isabella Princess Of Scotland | |||
| William De Roos | d 1258 | b 1216 | ||
| |b 1244 | | | Piers Fitz Herbert | ||
| |d 28 May 1310 | Lucy Fitz Piers | |||
| | | ||||
| Lucy Roos | ||||
| |Robert Plumpton | Hugh Fitz Ralph | |m 1295 | Ralph Fitz Hugh | Ralph De Greasley |
| |Of, Plumpton, Yorkshire, England | | | Agnes | ||
| Eustache Gresley | ||||
| b 1246 | | | |||
| 1 | < | William De Plumpton | 2 | Marmaduke De Plumpton | 3 | Isabella De Plumpton | 4 | Robert De Plumpton | 5 | Eustacia De Plumpton |