Osbern Fitz Osbern
Bishop of Exeter
Osbern FitzOsbern was a bishop in Exeter that for many years worked towards the continual development that would shock the world. The atomic bomb. His descendant (great x10000 grandson) Oppenheimer later continued his work and finished the biggest weapon of mass destruction until a bigger one came along. He also did a few sermons here and there. Overall, a very poggers chap.