 It is a Grade II* listed building.It is, based upon the writing of Matthew Paris, believed to have been founded in AD948 by Abbot Ulsinus of St Albans.Although there are now some questions about the exact date of its foundation (and the date of Abbot Ulsinus), it is reasonably clear that, together with St Michael's and St Peter's churches, the church was built at about that time to receive pilgrims and to prepare them for their visit to the shrine of St Alban within St Albans Abbey.