GREENHAM, a chapelry, in the parish of Thatcham, union of Newbury, hundred of Faircross, county of Berks, 1½ mile (S. E.) from Newbury; containing 1228 inhabitants. It comprises 2551a. 24p., of which 887 acres are waste or common. The chapel was given, with Thatcham, to Reading Abbey by Henry I., from which period it has been considered a chapel of ease: it was enlarged in 1825, by 120 sittings. The Knights Hospitallers had a commandery here before the time of Henry VI. Tithe rent-charges have been awarded, of which £422 are payable to an impropriator, and £130 to the vicar of the parish.