After Foliot 's failed candidacy as bishop , in February 1216 John appointed him to the benefice of Colwall in Herefordshire , the king having the ability to make the appointment because Giles de Braose , the Bishop of Hereford , who would normally have made the appointment , had recently died . Also from this time come Foliot 's patronage of Robert Grosseteste , the theologian and future Bishop of Lincoln .