Would Greek names be used in medieval England?
No Greek names would have been used by the general population in medieval England, but some may have been used by the clergy. I base my on the foundation that people were not literate and wouldn’t have known Greek names in this time unless they had direct contact with a person of Greek origin or read it some place. Since they couldn’t read that wasn’t possible and there was very little foreign travel in this time. Monks may have known Greek or Latin names because they could read and could speak Latin or Greek. So, they may have used a Greek/Latin name.