The discovery of Bishop Ivo's remains in 1001 was first mentioned briefly in John of Worcester's Chronicon ex chronicis.
He appears in the historical sources in 1001/2 when a peasant allegedly found his coffin while ploughing at Slepe (later renamed St Ives).
On 24 April 1002 Abbot Eadnoth translated Ivo's body, along with two of his companions, to the mother house at Ramsey.
[3] 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.