His wife was Margaret of Hereford , daughter of Miles of Gloucester , 1st Earl of Hereford , and Sibyl de Neufmarché .
Head entity: margaret of hereford Q6760064 3 4 5
Tail entity: miles of gloucester, 1st earl of hereford Q3314094 9 10 11 12 13 14 15 16
Relation (head \u2192 tail): P22
Inverse relation (tail \u2192 head): P40