Nothing remains of Holy Trinity Priory, which is believed to have stood on the site of the Bullcroft recreation ground off the High Street. This Benedictine priory was established on land granted to St Albans Abbey in 1097 by Henry I, and Geoffrey the Chamberlain gave the priory to St Albans. Paul, 14th Abbot of St Albans sent some of his monks to establish a cell there. John of Wallingford, Richard of Wallingford, William de Kirkeby and William of Wallingford, who all began at the Priory, later became abbots at St Albans. William Binham, prior in the late 14th century was a theologist who challenged the views of John Wycliff, his former friend and colleague at Oxford over the papacy. The priory was dissolved in 1525 by Cardinal Wolsey, partly in order to fund the building of Cardinal College, Oxford. Work at 56 High Street, in 1983, exposed burials in chalk cists which are believed to be part of the cemetery.