His daughter was Blanche of Lancaster , who would in 1359 become the first wife of John of Gaunt , and in 1367 the mother of the future King Henry IV of England .
Head entity: henry iv of england Q161866 29 30 31 32
Tail entity: blanche of lancaster Q238334 3 4 5
Relation (head \u2192 tail): P25
Inverse relation (tail \u2192 head): P40