| Birth | 1396 | Gloucestershire, England | | | |
| Marriage | Abt 1412 | Gloucestershire, England - James DE BERKELEY 1st Baron Berkeley | | | |
| Marriage | 13 Jul 1416 | Berkeley, Gloucestershire, England - Henry 6TH BARON FERRERS of Groby | | | |
| Death | 29 Sep 1452 | Gloucester, City of Gloucester, Gloucestershire, England | | | |
| LDS+Sealed | | Bap 15 Apr 1933, End 30 June 1933 | | | |
| Burial | | Gloucester, City of Gloucester, Gloucestershire, England | | | |
| Find A Grave | | https://www.findagrave.com/memorial/48365111/isabel-de_mowbray | | | |
| Fact | | https://www.geni.com/people/Lady-Isabelle-Berkeley/6000000000151813693?through=6000000002173010199 | | | |
| Fact | | https://www.geni.com/people/Lady-Isabelle-Berkeley/6000000000151813693?through=6000000000151698873 | | | |