Sancta Helena's Church
The Sancta Helena's Church was a church in Colchester, a city in Essex, England dedicated to Saint Helena, the mother of Byzantine Emperor Constantine I. It notably housed the remains of Cunobeline, a Britonnic chieftain that came to revered as a King of the Britons.
In the 870s, the church was visited by the Viking Eivor Varinsdottir during her time in the city. While exploring the church, Eivor came across Cunobeline's tomb and also recovered a Book of Knowledge in a hidden quarters of the building.[1]