| Husband: | Humphrey de BOHUN (1342-1373) | |
| Wife: | Joan FITZALAN (1347-1419) | |
| Children: | Eleanor de BOHUN (1366-1399) | |
| Mary de BOHUN (c. 1368-1394) | ||
| Name: | Humphrey de BOHUN | |
| Sex: | Male | |
| Name Suffix: | 7th Earl of Hereford | |
| Father: | - | |
| Mother: | - | |
| Birth | 1342 | |
| Death | 16 Jan 1373 (age 30-31) | |
| Name: | Joan FITZALAN | |
| Sex: | Female | |
| Name Prefix: | Lady | |
| Father: | - | |
| Mother: | - | |
| Birth | 1347 | |
| Death | 7 Apr 1419 (age 71-72) | |
Spouse: Thomas of WOODSTOCK, ThomasWoodstock
| Name: | Eleanor de BOHUN | |
| Sex: | Female | |
| Name Suffix: | Duchess of Gloucester | |
| Spouse: | Thomas of WOODSTOCK (1355-c. 1397) | |
| Birth | 1366 | |
| Death | 3 Oct 1399 (age 32-33) | |
Spouse: Henry BOLINGBROKE, King_Henry_IV
| Name: | Mary de BOHUN | |
| Sex: | Female | |
| Spouse: | Henry BOLINGBROKE (c. 1366-1413) | |
| Birth | c. 1368 | |
| Death | 4 Jun 1394 (age 25-26) | Peterborough Castle |
Joan FitzAlan, Countess of Hereford, Countess of Essex and Countess of Northampton (1347 – 7 April 1419), was the wife of the 7th Earl of Hereford, 6th Earl of Essex and 2nd Earl of Northampton. She was the mother of Mary de Bohun, the first wife of Henry of Bolingbroke who later reigned as King Henry IV, and Eleanor de Bohun, Duchess of Gloucester. She was the maternal grandmother of King Henry V.
In 1400, she gave the order for the beheading of the Earl of Huntingdon in revenge for the part he had played in the execution of her brother, the 11th Earl of Arundel.
The estates which comprised Joan's large dowry made her one of the principal landowners in Essex, where she exercised lordship, acting as arbitrator and feoffee in property transactions.