Thanks to an endowment by Earl Adelmus, the church was expanded in 1017 into a Benedictine priory dependent on Ramsey, providing Slepe as well as part of Elsworth and Knapworth as endowment. In the 12th century, the celebration of Ivo's memorial day was customarily observed in the cathedral at Exeter. The parish of St Ive in Cornwall and belonging to Trebeigh, and its church are also attributed to Ivo.
The church was enlarged in 1017 thanks to a gift from Earl Adelmus, transforming it into a Benedictine priory under Ramsey's oversight, receiving Slepe and portions of Elsworth and Knapworth as endowments. During the 12th century, the commemoration of Ivo's memorial day was a regular event at Exeter Cathedral. The parish of St Ive in Cornwall, belonging to Trebeigh, and its church are also linked to Ivo.