The death certs reflect where the death occurred. Could Edmund's occupation explain why he was in Swindon? The death certs have the age of the deceased on them, but you have to realise they may not be very exact, especially if someone dies away from home and the death is registered by eg a landlord/boarding house keeper.
You could order one of the certs from the local registry office, specifying it was an adult who died not an infant (then they usually won't charge you if it's a baby who died), and see if that throws any light on the problem.
