Church of St Laurence, Upminster Church of St Laurence, Upminster The church of St Laurence, Upminster, is the Church of England parish church in Upminster, England. It is a Grade I listed building. It is the historic minster or church from which Upminster derives its name, meaning 'upper church', probably signifying 'church on higher ground'. The place-name is first attested as 'Upmynster' in 1062, and appears as 'Upmunstra' in the Domesday Book of 1086. Alice Perrers, mistress of King Edward III, was buried in the church or churchyard in 1400. There is no memorial to mark her grave. She had three illegitimate children by the
Alice FitzAlan, Baroness Cherleton Eleanor of Lancaster, and her maternal grandparents were William de Bohun, 1st Earl of Northampton and Elizabeth de Badlesmere. On 21 September 1397, her father was executed at Tower Hill, Cheapside for high treason against King Richard II of England. Sometime before March 1392 Alice married John Cherleton, 4th Lord Cherleton (25 April 1362 – 19 October 1401). According to popular belief, following her marriage she became the mistress of Cardinal Henry Beaufort, and bore him an illegitimate daughter, Jane Beaufort. In Philip Yorke's "The Royal Tribes of Wales", he states that "Cardinal Beaufort left an illegitimate daughter by Alice,