"William [de Bromley, lord of Badinton,] 2d son and heir by survivorship, of Chettleton, [æt. 13, 7 Hen. 5 [1419-1420], living] 9 Hen. 6, [ob. 9 Hen. 6 [1427-1428], Inqs. 9 Hen. 6, and] 15 Hen. 7."
Note: The quoted (black) brackets enclose material added in the second edition (1882).
Presumably the reference to 15 Hen. 7 (about 1499) means that an Inquisition post mortem reviewed his property as late as 1499, several years after his son John died.