Venerable —, English monk and saint who died in 735 AD (4)
I believe the answer is:
bede
(Other definitions for bede that I've seen before include "Venerable author of The Ecclesiastical History of the English People, d. 735" , "Venerable English saint" , "Authority consulted on English history" , "Old historian" , "Historian saint; Eliot's Adam" .)