See also

John D'ARGENTINE's parents: Reginald D'ARGENTINE (c. 1242-c. 1307) and Laura DE VERE ( -c. 1291)
Agnes BEREFORD's parents: Sir William de BEREFORD (c. 1260-c. 1326) and Margaret DU PLESSIS (c. 1263- )
Agnes BEREFORD's brother: Edmund de BEREFORD ( - )

Family of John (Sir) D'ARGENTINE and Agnes de BEREFORD

Husband:
John (Sir) D'ARGENTINE (c. 1278-1318)
Wife:
Agnes de BEREFORD (c. 1290-1375)
Children:
John (Sir) ARGENTINE (c. 1318-1382)

Husband: John (Sir) D'ARGENTINE

Name:
John (Sir) D'ARGENTINE
Sex:
Male
Father:
Reginald D'ARGENTINE (c. 1242-c. 1307)
Mother:
Laura DE VERE ( -c. 1291)
Birth:
c. 1278
Little Wymondley, Herts^1,2
Death:
20 Feb 1318 (age 39-40)
Melbourn, Cambs²

Wife: Agnes de BEREFORD

Name:
Agnes de BEREFORD
Sex:
Female
Father:
Sir William de BEREFORD (c. 1260-c. 1326)
Mother:
Margaret DU PLESSIS (c. 1263- )
Birth:
c. 1290
Burton-on-the-Wolds, Leics²
Death:
18 Jul 1375 (age 84-85)
Newgate, London¹

Child 1: John (Sir) ARGENTINE

Name:
John (Sir) ARGENTINE
Sex:
Male
Spouse:
Margaret D'ARCY (c. 1313-1393)
Birth:
c. 1318
Steeple Bumstead, Essex¹
Death:
18 Nov 1382 (age 63-64)
Little Wymondley, Herts^2,3

Sources

1.: familysearch.org.

2.: geni.com.

3.: thepeerage.com.