The present church replaces an Anglo-Saxon building which was the cathedral of the Bishops of Cornwall.
Cornwall | Bishop | bishop | Bishop (Catholic Church) | Bishop of Winchester | Bishop of London | titular bishop | Bishop of Durham | Cornwall County Cricket Club | Falmouth, Cornwall | Duchy of Cornwall | Camilla, Duchess of Cornwall | Bishop of Ely | Titular Bishop | Metropolitan bishop | Bishop of Lincoln | Bishop of Chester | Bishop Auckland | Bishop of Exeter | St Ives, Cornwall | Bishop of Rochester | Bishop of Llandaff | Titular bishop | The Case of the Stuttering Bishop | Bishop of Meath | Bishop of Bath and Wells | Stephen Bishop | Richard, 1st Earl of Cornwall | Cornwall, Ontario | metropolitan bishop |
The church is dedicated to St Germanus and soon after construction it became the cathedral for Cornwall in 926 AD, when King Athelstan appointed Conan as the bishop of Cornwall.