Manor of Glasbury passed from Gloucester Abbey to Walter de Clifford, after which time it was frequently contested by the marcher families. Following a dispute with John Giffard, the lordship passed to John de Braose of Glasbury (son of John de Braose) in 1275. In 1299, it passed to Margaret Longespee and her husband Henry de Lacy, 3rd Earl of Lincoln and in 1330 to Roger Mortimer, 1st Earl of March. The lordship was seized by the crown in 1331, and granted to Eubulo le Strange, but returned to Mortimer's grandson Roger Mortimer, 2nd Earl of March in 1354 and in 1360 to his son Edmund Mortimer, 3rd Earl of March. In 1404, King Henry IV granted the lordship to Sir Robert Whitney "in consequence of his father...having been killed in the royal service and his property burnt by the Welsh rebels". Glasbury Castle Glasbury Castle, north of the river, was first mentioned in 1144 when it was granted (with the manor) to Walter de Clifford. In August 1233, the castle was attacked and captured by King Henry III following a baronial rebellion by the Cliffords, but little more is recorded after that, though it was still in existence in a survey of Glasbury Manor dated 1561 Remains of its earthworks were visible near the centre of the village until housing development in the 1970s. Split between Radnorshire and Breconshire Following the end of the semi-autonomous Marcher Lordships with the Laws in Wales Acts 1535–1542, the parish and village of Glasbury north of the Wye together with the village south of the Wye were placed in the hundred of Painscastle in the county of Radnorshire, whilst the outlying parts of the parish south of the Wye (including Felindre, Pipton, and Tregoyd) were placed in the hundred of Talgarth in the county of Brecknockshire. This continued till 1844, when all of Glasbury south of the Wye was transferred to Brecknockshire. The village today Two ecclesiastical parishes Following floods in the mid seventeenth century, the River Wye changed course and the old parish church of St Peter's found itself south (rather than north) of the river and subsequently fell into disrepair. A new one was built still further south in 1661, though the current building dates from 1837. It is now a Grade II listed building. In 1883, a second church was built north of the river and the Radnorshire side of