The manor of Writtle was held by Earl Harold before the Conquest, when it was assessed at 16 hides, and by King William in 1086, when it was assessed at 14 hides This great manor also contained woodland for 1000 pigs and 3 acres of meadow. Two hides and 20 acres in Writtle were held by the Bishop of Hereford in 1086; 1 hide of this had been held by Earl Harold in 1066, and the rest by the church.
The church was granted by King Stephen to Bermondsey Priory in 1143. Pope Innocent III (1198-1216) founded the Hospital of the Santo Spirito in the church of St Mary in Saxia, Rome, for the English population of the city, and at his request King John granted the church of Writtle to it in 1204 for its support. Until the church became vacant, the king supported the hospital from the Exchequer, and this happened in 1218. A priory was built alongside the church at Writtle, and thereafter the church was served by the brethren. It was apparently rebuilt in the 1230s to reflect its new status.