Cedd built monasteries at Tilbury in the south and at Ythancæster, where there was an old Roman fort, at what is now Bradwell-on-Sea, in north-east Essex.
Cedd construíu mosteiros en Tilbury no do sur e en Ythancæster, onde había un vello forte romano, no que é agora Bradwell-on-Sea, ao nordeste de Essex.