Isabella was born about 1243 in Grassington, Yorkshire, England, the daughter of unknown parents.
Her husband was sir Robert de Plumpton. They were married, but the date and place have not been found. Their only known child was Robert II (1268-c1325).
| Event | Date | Details | Source | Multimedia | Notes | ||
|---|---|---|---|---|---|---|---|
| Birth | ABT 1243 |
|