Mit slægtsforskingsprojekt.

1340 - 1399 (58 år)

	Anden Fætre / Kusiner
1	Amy De Gaveston , f. Ja, dato ukendt d. 1334
2	Margaret De Audley , f. ca. 1301, Stafford, Staffordshire, England d. 7 sep. 1349, Tonbridge, Kent, England
3	Joan De Gaveston , f. 1310, England d. 1325, England
4	Countess Of Arundel Isabel De Spenser , f. 1 jul. 1312, Winchester, Gloucester, England d. 11 jan. 1371, Arundel, Sussex, England
5	Isabel De Spenser , f. 1313, Gloucestershire, England d. 1357, England
6	Elizabeth De Spenser , f. 8 jan. 1315, Stoke, Gloucestershire, England d. 21 jul. 1389, Berkeley Castle, Gloucestershire, England buried St. Botulphes, London
7	Joan De Spencer , f. 1316, Stoke, Gloucestershire, England d. 4 maj 1394, England
8	Earl Hereford Humphrey De Bohun, IX , f. 25 mar. 1342, Hereford, Herefordshire, England d. 16 jan. 1373, Walden Abbey, Essex, England
9	Lady Countess of Arundel And Surrey Elizabeth De Bohun , f. 1349, Arundel, Sussex, England d. 3 apr. 1385, Arundel, Sussex, England

John Of Gaunt Plantagenet, Duke Of Lancaster