What Made Bede the Greatest Scholar of the Early Medieval Era?

On May 26, 735, Bede, English historian and monk, died. From the article:

"The Venerable Bede was a British monk whose works in theology, history, chronology, poetry, and biography have led him to be accepted at the greatest scholar of the early medieval era. Born in March of 672 and having died on May 25, 735 in Jarrow, Northumbria, UK, Bede is most famous for producing the Historia ecclesiastica (Ecclesiastical History), a source essential for our understanding of the Anglo-Saxons and the Christianisation of Britain in the era before William the Conqueror and the Norman Conquest, earning him the title of 'the Father of English history.'"