In Mail my name has been replaced with someone else's
The name of someone I recently added to Contacts is now replacing my own name in all incoming Mail ie it is now associated with my email address. I have now deleted his contact card (which had wrongly decided his email address was my email address), deleted all mention of him in Contacts and clicked on Remove from Previous Recipients list. Still every time I get an email from anyone my email address shows as his name. Help!
MacBook Air 13″, macOS 10.14