Two matters must be established separately: identifying the individual and establishing the individual’s critical standing. A fully written name may solve the first problem, but the second still calls for evidence concerning character and precision.
Suppose a transmitter’s complete name, town, and approximate period are known, yet no dependable critical information about that person survives. Some identity is established, but integrity is not established merely by those facts.
The converse is also possible: a transmitter little known by name may be well known to a competent evaluator. Technical classifications should therefore be based on the actual available critical evidence, not the modern reader’s subjective sense of familiarity.