Ecclesiastical History of the English People was written by-

• Venerable Bede is best known for his Ecclesiastical History of the English People (732?), tracing Britain’s history from 55 BC to AD 597, a source vital to the history of the conversion to Christianity of the Anglo-Saxon tribes in Britain.

• Venerable Bede, (born 672/673, traditionally Monkton in Jarrow, Northumbria [Eng.]—died May 25, 735, Jarrow; feast day May 25), Anglo-Saxon theologian, historian, and chronologist.
- Raised in a monastery, he was ordained a priest at age 30.
- His method of dating events from the time of Christ’s birth (AD) came into general use through the popularity of the Historia ecclesiastica and two works on chronology.

Source: Britannica.